{
  "title": "Addition Program",
  "origin_url": "https://en.wikipedia.org/wiki/CARDboard_Illustrative_Aid_to_Computation",
  "license_guess": null,
  "code_sha256": "525fdb7c24c4278e9ef8eb4f30bd575ed7e81fbb519f6e7747f13878231742c4",
  "added_at": "2026-02-12T10:48:39Z"
}