{
  "name": "Pictures per plate in Estabrooke’s 1872 manual",
  "desc": "Plate counts, exposures and lenses as printed in Edward M. Estabrooke, The Ferrotype, and How to Make It (1872), p. 53, where the 5 by 7 plate is also named, with the quarter and half plate sizes from his table on p. 197. The even grid and the picture size are this site’s arithmetic before trimming; the manual gives counts, not arrangements.",
  "lic": "CC BY 4.0",
  "lic_url": "https://creativecommons.org/licenses/by/4.0/",
  "by": "Flickers & Tintypes",
  "url": "https://flickersandtintypes.com/photo-objects/tintype/",
  "from": [
    "Estabrooke, The Ferrotype, and How to Make It (1872), pp. 53 and 197"
  ],
  "how": "Compiled by Flickers & Tintypes from the data listed",
  "data_by": [
    "Estabrooke, The Ferrotype, and How to Make It (1872), pp. 53 and 197; public domain in the US (published 1872), presumed public domain in the EU (published 1872; the author’s death date not verified)"
  ]
}