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Bas Machielsen

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Memories van Successie – Download Pipeline

Downloads all surviving Memories van Successie (Dutch succession/inheritance registers, 1806–1927) from regional Dutch archives and saves the scans with structured metadata.

What are Memories van Successie?

When someone died in the Netherlands between 1806 and 1927, their heirs were required to register the estate with the local tax office (kantoor van successie). These registers are a goldmine for genealogical research: they record the name of the deceased, the date and place of death, heirs and their relationships, and the value of the estate.

The registers are organised by fiscal district (kantoor) and contain individual entries (akten). Tafel V-bis (an appendix covering special cases) is excluded from all pipelines in this project.

Archive coverage

Province	Archive	System	Status
Friesland	Tresoar	Memorix REST API	✅ 1,107 registers, ~238k persons
Gelderland	Gelders Archief	MAIS + Playwright	✅ 21 kantoren
Zuid-Holland	Nationaal Archief	Custom scraper	✅
Drenthe	Drents Archief	Memorix REST API	✅
Noord-Brabant	BHIC	Memorix REST API	✅ 1,896 registers
Overijssel	Historisch Centrum Overijssel	MAIS + Playwright	✅ 10 kantoren
Utrecht	Het Utrechts Archief	MAIS + Playwright	✅ 11 kantoren
Limburg	RHCL	MAIS + Playwright	✅
Noord-Holland	Noord-Hollands Archief	MAIS + Playwright	✅
Zeeland	Zeeuws Archief	MAIS + Playwright	✅

Playwright note: Gelderland, Overijssel, Utrecht, Limburg, Noord-Holland, and Zeeland (MAIS) pipelines require uv run playwright install chromium to download the matching Chromium browser before running.

New to this project? GUIDE.md explains what these scripts do, why they’re needed, and how the archives work — in plain terms, no technical background assumed.

Install

pip install memories-crawl

Or for development with uv:

git clone https://github.com/rags2riches-project/memories_crawl.git
cd memories_crawl
uv sync

Quick start

Requirements: Python >= 3.12.

## First-time MAIS/Playwright setup (Gelderland, Overijssel, Utrecht, Limburg, Noord-Holland, Zeeland)
uv run playwright install chromium

## Download all archives (takes several hours)
memories-crawl all

## Or run one archive at a time
memories-crawl friesland
memories-crawl nationaalarchief
memories-crawl drentsarchief
memories-crawl bhic
memories-crawl overijssel
memories-crawl utrechtsarchief
memories-crawl limburg
memories-crawl noordholland
memories-crawl zeeland
memories-crawl gelderland

Filtering and listing inventory numbers

Three flags let you scope downloads instead of pulling the entire archive:

`--list-invnrs` — see what’s available

Prints all digitized inventory numbers (with kantoor, description, date range, and page count where available) and exits without downloading anything.

## List all digitized invnrs for an archive
uv run memories-crawl limburg --list-invnrs
uv run memories-crawl gelderland --list-invnrs
uv run memories-crawl drentsarchief --list-invnrs   # slow — fetches all deeds first

For archives with cached inventory (Limburg, Gelderland, Zeeland), this runs instantly without launching a browser. For others (Overijssel, Utrecht, Noord-Holland), it needs the Playwright token-harvest pass first — but cached tokens are reused on reruns.

`--csv` — export listing to a spreadsheet

When combined with --list-invnrs, writes the inventory listing to a CSV file instead of (or in addition to) printing it to the terminal. The terminal output is still shown.

## Default filename: {pipeline}_invnrs.csv
uv run memories-crawl zeeland --list-invnrs --csv

## Custom filename
uv run memories-crawl gelderland --list-invnrs --csv my-output.csv

Archive	CSV columns
friesland	`invnr, kantoor, register_name`
nationaalarchief	`invnr`
drentsarchief	`invnr`
bhic	`invnr, gemeente, register_name`
overijssel	`kantoor, invnr, pages`
utrechtsarchief	`kantoor, section, invnr, description, pages`
limburg	`code, invnr, place_or_kantoor, datering, title`
noordholland	`kantoor, period, invnr, description, pages`
zeeland	`kantoor, invnr, description`
gelderland	`kantoor, code, invnr, description`

`--invnr` — download a specific volume

Restricts the download to one or more inventory numbers. Repeat the flag for multiple:

## Download a single register
uv run memories-crawl limburg --invnr 1

## Download several at once
uv run memories-crawl gelderland --invnr 1 --invnr 2

## Combine with --list-invnrs to preview what would be downloaded
uv run memories-crawl zeeland --invnr 1 --invnr 42 --list-invnrs

The filter is applied as early as possible: for archives with cached inventory it happens before the slow Playwright token-harvest phase; for the rest it happens after token harvest but before downloading. Only matching invnrs are processed.

Pipelines in detail

Friesland – Tresoar / AlleFriezen

uv run memories-crawl friesland Source file: src/memories_crawl/friesland.py

Uses Tresoar’s Memorix genealogy REST API via the AlleFriezen tenant key (aa030ec4-12d0-4dc0-afaf-b65fd6128b39).

Enumerates all 1,107 MvS registers via /register?fq=search_s_type_title:"Memories van successie".
For each register, paginates /deed (assets embedded) and /person.
Joins persons to deeds by deed_id, filters to overledene persons.
Downloads all asset[].download URLs (JPEG 2000 .jp2, full-size).

Tafel V-bis is not present at Tresoar (0 results for “tafel” or “v-bis”).

Progress is tracked in friesland_progress.csv (per-register). Existing per-person directories (with metadata.json) are skipped on reruns. Output: scans/friesland/{kantoor}/{invnr}/{person_slug}/.

Gelderland – Gelders Archief

uv run memories-crawl gelderland Source file: src/memories_crawl/gelderland.py

Uses the MAIS Internet viewer (miadt=37, mivast=37) on the geldersarchief.nl domain. Unlike other MAIS instances, the Gelders Archief gives each kantoor its own archive code (micode). 21 kantoren are configured with codes 0021–0037, 0092, 0221–0223.

For each kantoor (micode), navigates to the inv2 root, picks the “Register IV” top-level minr (filtering out Tafel VI / V-bis).
Enumerates leaf inventarisnummers via the inv3 tree, expanding all period sub-sections and filtering for digitized (h_scan) items.
For each leaf invnr, navigates to the inv2 minr page (strip auto-loads), force-loads all strip chunks via mi_strip_store.populate(), and harvests thumbnail URLs (fonc-gea).
Converts thumbnail URLs to full-size (?format=large, 1024-pixel-tall PNG) and downloads.

Image URL format:

https://preserve2.archieven.nl/mi-37/fonc-gea/{code}/{invnr}/
    {invnr}-{page:04d}.jp2
    ?format=large&miadt=37&miahd={miahd}&mivast=37&rdt={rdt}&open={token}

The full-resolution JP2 is only reachable via IIPSrv tile-server requests; format=large is the practical maximum.

Inventory and token caches (inventory_{code}.json, tokens_{code}.json with partial saves every 25 invnrs) skip Playwright on reruns. Already-downloaded kantoren are tracked in scans/gelderland/done.txt.

First-time setup: run uv run playwright install chromium after uv sync.

Nationaal Archief – Zuid-Holland

uv run memories-crawl nationaalarchief Source file: src/memories_crawl/nationaalarchief.py

Access number 3.06.05. The pipeline: 1. Fetches the EAD XML inventory (/download/xml) and parses section 2.4 for Memories invnrs, excluding Tafel V-bis and Tafel VI. Falls back to a hardcoded range list if the download fails. 2. For each inventory number, loads the viewer page and extracts scan UUIDs from the embedded drupal-settings-json data block. 3. Downloads full-size scans from service.archief.nl/api/file/v1/default/{UUID}.

Progress is tracked in nationaalarchief_done.txt so interrupted runs can be resumed. Output: scans/nationaalarchief/{invnr}/.

Drents Archief

uv run memories-crawl drentsarchief Source file: src/memories_crawl/drentsarchief.py

Uses the Memorix genealogy REST API at webservices.memorix.nl/genealogy (~106,000 deeds total).

Searches all persons with deed type Successiememories (paginated, 35,000+ pages).
Collects unique deed IDs and fetches the deed detail for each.
Downloads all asset[].download URLs (full-size JPEGs).

Progress is tracked in drentsarchief_deeds.csv. Output: scans/drentsarchief/{deed_id}/.

BHIC – Brabants Historisch Informatie Centrum (Noord-Brabant)

uv run memories-crawl bhic Source file: src/memories_crawl/bhic.py

Uses the same Memorix backend as Drenthe but with a different tenant key (24c66d08-da4a-4d60-917f-5942681dcaa1). Crucially, BHIC’s scans live at the register level (one register = one bound book of memories), not at the deed level — so the pipeline pivots around registers, not deeds.

Enumerates all 1,896 registers via /register?fq=search_s_type_title:"memorie van successie". Covers both 036.03.xx (kantoor series) and 021.13 (Memories van successie Brabant).
For each register, paginates /asset?fq=register_id:{id} and downloads every asset[].download URL (full-size JPEG).
Paginates /deed?fq=register_id:{id} and /person?fq=register_id:{id} and writes them, joined, as a deeds.json sidecar — giving you aktenummer, plaats, naam van de overledene, datum overlijden, … alongside the scans.

Tafel V-bis is not indexed at BHIC, but a defensive filter skips any record whose name/type still contains “tafel” or “v-bis”.

Progress is tracked in bhic_progress.csv. Output: scans/bhic/{gemeente}/deel_{invnr}/.

Limburg – Regionaal Historisch Centrum Limburg (RHCL)

uv run memories-crawl limburg Source file: src/memories_crawl/limburg.py

Uses the MAIS Internet viewer on archieven.nl (miadt=38, mivast=0). Covers two archive codes:

Code	Period	Total invnrs	Digitized	Organised by
07.D03	1818–1900 (1905)	1,314	111	Plaats (place)
07.D08	1901–1927	460	42	Kantoor

The pipeline uses Playwright/Chromium to:

Navigate to the inv2 root for each code, expand all “Records N t/m M” batch toggles, then harvest digitized invnr minr values (marked with h_scan.gif). Exclusion: 07.D08’s sibling “Tafels 5bis” section is never entered.
For each digitized invnr: navigate to the inv2 page (strip auto-loads), click “Volgende” until all pages are loaded, harvest per-page tokens from <img src> attributes.
Download full-size PNG scans (format=large, 714x1024).

Inventory and token caches (scans/limburg/inventory_{code}.json, scans/limburg/tokens_{code}_{invnr}.json) skip the slow Playwright pass on reruns.

First-time setup: run uv run playwright install chromium after uv sync.

Overijssel – Historisch Centrum Overijssel

uv run memories-crawl overijssel Source file: src/memories_crawl/overijssel.py

The HCO uses a MAIS Internet viewer where scan images require per-page authentication tokens (miahd, rdt, open) injected by the browser-side JavaScript. These cannot be retrieved with plain HTTP requests.

The pipeline uses Playwright/Chromium to drive a headless browser:

Navigates to the MAIS inv3 inventory page for each kantoor, establishing the required session cookies automatically.
Calls mi_inv3_toggle_stk() for each invnr volume to load the stk3 thumbnail strip.
Harvests per-page tokens from the rendered <img src> attributes.
Downloads full-size scans using those tokens.

Token results are cached per-kantoor in scans/overijssel/tokens_minr_{minr}.json so the Playwright pass does not need to repeat on reruns.

First-time setup: run uv run playwright install chromium after uv sync.

Covers all 10 kantoren: Almelo, Deventer, Enschede, Goor, Kampen, Ommen, Raalte, Steenwijk, Vollenhove, Zwolle.

Utrechts Archief – Het Utrechts Archief (HUA)

uv run memories-crawl utrechtsarchief Source file: src/memories_crawl/utrechtsarchief.py

The HUA also uses a MAIS Internet viewer (miadt=39, mivast=39). The pipeline uses Playwright/Chromium with the same stk3 inline toggle approach as Overijssel:

Navigates to the inv2 inventory page for each kantoor’s archive code, expands the tree to discover Memories van Successie subsection minr values.
For each subsection, navigates to the inv3 view in a single Playwright session.
Calls mi_inv3_toggle_stk() for each inventarisnummer to expand the stk3 thumbnail strip inline.
Harvests per-page tokens from the rendered <img src> attributes.
Derives full-size URLs by stripping ?format=thumb from the harvested thumbnail URLs.
Downloads full-size PNG scans.

Unlike Overijssel, each kantoor has a different archive code (micode, e.g. 337-2 for Amersfoort, 337-7 for Utrecht), and subsection minr values are discovered dynamically rather than being hardcoded.

Token results are cached per subsection in scans/utrechtsarchief/tokens_{micode}_{minr}.json. Partial results are saved every 25 items for crash resilience. Already-downloaded inventarisnummers are tracked in scans/utrechtsarchief/done_{kantoor}.txt.

First-time setup: run uv run playwright install chromium after uv sync.

Covers all 11 kantoren: Amersfoort, Amerongen, Loenen, Maarssen, Montfoort, Rhenen, Utrecht, IJsselstein, Vianen, Woerden, Wijk bij Duurstede.

Noord-Holland – Noord-Hollands Archief (NHA)

uv run memories-crawl noordholland Source file: src/memories_crawl/noordholland.py

Uses the MAIS Internet viewer (miadt=236, mivast=236, archive code 178) on the noord-hollandsarchief.nl domain. The pipeline uses Playwright/Chromium with the same stk3 inline toggle approach as Overijssel and Utrecht:

Navigates to the inv2 page for archive 178; 15 kantoor-level entries are parsed from the initial DOM.
For each kantoor: expands the tree node to reveal period children, collects their minr values, and filters out Tafel V-bis items.
For each MvS period minr: navigates to the inv3 page, collects all stk3 child items, toggles each one to force-load the thumbnail strip, harvests per-page tokens from <img src> attributes.
Converts thumbnail URLs to full-size (removes ?format=thumb) and downloads.

Token results are cached per period minr in scans/noordholland/tokens_{minr}.json with partial saves for crash resilience. Already-downloaded kantoren are tracked in scans/noordholland/done.txt.

First-time setup: run uv run playwright install chromium after uv sync.

Zeeland – Zeeuws Archief

uv run memories-crawl zeeland Source file: src/memories_crawl/zeeland.py

Uses the MAIS Internet viewer (miadt=239, mivast=239) on the zeeuwsarchief.nl domain. The archive is identified by micode=398 (“Ontvangers der Successierechten in Zeeland, (1795) 1806-1927”). The pipeline uses Playwright/Chromium with the same stk3 inline toggle approach as Overijssel, Utrecht, and Noord-Holland:

Navigates to the inv2 inventory page for archive 398, discovers kantoor sections from the tree (mi_inv3_openinv links).
Expands each kantoor node to reveal inventarisnummers with stk3 inline strips.
Calls mi_inv3_toggle_stk() for each inventarisnummer to load the stk3 thumbnail strip.
Force-loads all strip chunks and harvests per-page tokens from <img src> attributes.
Derives full-size URLs by stripping ?format=thumb from thumbnail URLs and downloads scans.

Token results are cached per kantoor in scans/zeeland/tokens_minr_{minr}.json with partial saves for crash resilience. Already-downloaded kantoren are tracked in scans/zeeland/done.txt.

First-time setup: run uv run playwright install chromium after uv sync.

Output structure

scans/
├── friesland/{kantoor}/{invnr}/{person_slug}/
│   ├── metadata.json
│   └── 0001.jp2 …
├── gelderland/{kantoor}/{invnr:04d}/
│   ├── metadata.json
│   └── {invnr}-0001.jpg …
├── nationaalarchief/{invnr}/
│   ├── metadata.json
│   └── NL-HaNA_3.06.05_{invnr}_*.jpg
├── drentsarchief/{deed_id}/
│   ├── metadata.json
│   └── 0001.jpg …
├── bhic/{gemeente}/deel_{invnr}/
│   ├── metadata.json
│   ├── deeds.json
│   └── {Gemeente}_{NNN}_NNNN.jpg …
├── limburg/{code}/{invnr}/
│   ├── metadata.json
│   └── 0001.jpg …
├── overijssel/{kantoor}/{invnr}/
│   ├── metadata.json
│   └── 0000.jpg …
├── utrechtsarchief/{kantoor}/{invnr}/
│   ├── metadata.json
│   └── 0000.jpg …
├── noordholland/{kantoor}/{invnr:04d}/
│   ├── metadata.json
│   └── 0001.jpg …
└── zeeland/{kantoor}/{invnr}/
    ├── metadata.json
    └── 0000.jpg …

Metadata JSON format

Every scan folder contains a metadata.json with standardised fields:

{
  "archief_naam": "BHIC",
  "archief_nummer": "...",
  "brontype": "Memorie van Successie",
  "gemeente": "...",
  "inventarisnummer": "...",
  "naam_overledene": "...",
  "sterfjaar": "...",
  "kantoor": "...",
  "url_origineel": "..."
}

Fields vary by archive depending on what metadata is available in the source system.

Resuming interrupted runs

All pipelines are designed to be safely restarted:

Friesland: tracks completed registers in friesland_progress.csv (rows with status=done are skipped); existing per-person directories (with metadata.json) are skipped on reruns.
Gelderland: inventory and token cache files (inventory_{code}.json, tokens_{code}.json with partial saves every 25 invnrs) skip the slow Playwright pass; already-downloaded images are skipped by file existence check. Completed kantoren are tracked in scans/gelderland/done.txt.
Nationaal Archief: tracks completed inventory numbers in nationaalarchief_done.txt.
Drents Archief: tracks completed deeds in drentsarchief_deeds.csv (rows with status=done are skipped).
BHIC: tracks completed registers in bhic_progress.csv (rows with status=done are skipped); already-downloaded scans are skipped by file existence check.
Overijssel: token cache files (tokens_minr_*.json) skip the slow Playwright pass; already-downloaded images are skipped by file existence check.
Limburg: inventory and token cache files (inventory_{code}.json, tokens_{code}_{invnr}.json) skip the slow Playwright pass; already-downloaded images are skipped by file existence check.
Utrechts Archief: token cache files (tokens_{micode}_{minr}.json, with partial saves every 25 items for crash resilience) skip the slow Playwright pass; already-downloaded images are skipped by file existence check. Completed inventarisnummers are tracked in done_{kantoor}.txt per kantoor.
Noord-Holland: token cache files (tokens_{minr}.json, with partial saves for crash resilience) skip the slow Playwright pass; already-downloaded images are skipped by file existence check. Completed kantoren are tracked in scans/noordholland/done.txt.
Zeeland: token cache files (tokens_minr_{minr}.json, with partial saves for crash resilience) skip the slow Playwright pass; already-downloaded images are skipped by file existence check. Completed kantoren are tracked in scans/zeeland/done.txt.

Links

AI / Agents

Developers

Meta

Memories van Successie – Download Pipeline

What are Memories van Successie?

Archive coverage

Install

Quick start

Filtering and listing inventory numbers

--list-invnrs — see what’s available

--csv — export listing to a spreadsheet

--invnr — download a specific volume

Pipelines in detail

Friesland – Tresoar / AlleFriezen

Gelderland – Gelders Archief

Nationaal Archief – Zuid-Holland

Drents Archief

BHIC – Brabants Historisch Informatie Centrum (Noord-Brabant)

Limburg – Regionaal Historisch Centrum Limburg (RHCL)

Overijssel – Historisch Centrum Overijssel

Utrechts Archief – Het Utrechts Archief (HUA)

Noord-Holland – Noord-Hollands Archief (NHA)

Zeeland – Zeeuws Archief

Output structure

Metadata JSON format

Resuming interrupted runs

`--list-invnrs` — see what’s available

`--csv` — export listing to a spreadsheet

`--invnr` — download a specific volume