{
  "count": 9,
  "rights_summary": "Mixed. The 1,599 entries drawn from eight works published 1683–1906 are in the public domain. The 3,861 entries drawn from Roberts & Etherington (1982) come from a United States Government publication (Library of Congress) issued openly by Conservation OnLine; they are reproduced on the understanding that such a publication carries no copyright, and will be withdrawn on request from a rightsholder. Every record carries rights_tier and source.rights so the two are never confused. The compilation, normalisation and apparatus are CC0.",
  "sources": [
    {
      "siglum": "MOX",
      "id": "pg78991",
      "author": "Moxon, Joseph",
      "rights_tier": "public-domain",
      "work": "Moxon's Mechanick Exercises, Volume 2",
      "year": 1683,
      "rights": "Public domain (Project Gutenberg, pre-1930 text)",
      "entries": 35
    },
    {
      "siglum": "DAP",
      "id": "pg77410",
      "author": "Savage, William",
      "rights_tier": "public-domain",
      "work": "A Dictionary of the Art of Printing",
      "year": 1841,
      "rights": "Public domain (Project Gutenberg, pre-1930 text)",
      "entries": 753
    },
    {
      "siglum": "MAB",
      "id": "pg55056",
      "author": "Nicholson, James B.",
      "rights_tier": "public-domain",
      "work": "A Manual of the Art of Bookbinding",
      "year": 1856,
      "rights": "Public domain (Project Gutenberg, pre-1930 text)",
      "entries": 106
    },
    {
      "siglum": "AMP",
      "id": "pg56817",
      "author": "MacKellar, Thomas",
      "rights_tier": "public-domain",
      "work": "The American Printer: A Manual of Typography",
      "year": 1866,
      "rights": "Public domain (Project Gutenberg, pre-1930 text)",
      "entries": 215
    },
    {
      "siglum": "BIB",
      "id": "pg38946",
      "author": "Sabin, Joseph",
      "rights_tier": "public-domain",
      "work": "Bib-li-op-e-gis-tic: Pertaining to the Art of Binding Books",
      "year": 1889,
      "rights": "Public domain (Project Gutenberg, pre-1930 text)",
      "entries": 39
    },
    {
      "siglum": "ABB",
      "id": "pg51213",
      "author": "Zaehnsdorf, Joseph W.",
      "rights_tier": "public-domain",
      "work": "The Art of Bookbinding: A Practical Treatise",
      "year": 1890,
      "rights": "Public domain (Project Gutenberg, pre-1930 text)",
      "entries": 137
    },
    {
      "siglum": "BCB",
      "id": "pg26672",
      "author": "Cockerell, Douglas",
      "rights_tier": "public-domain",
      "work": "Bookbinding, and the Care of Books",
      "year": 1901,
      "rights": "Public domain (Project Gutenberg, pre-1930 text)",
      "entries": 64
    },
    {
      "siglum": "NBL",
      "id": "pg47456",
      "author": "Bailey, Arthur L.",
      "rights_tier": "public-domain",
      "work": "Notes on Bookbinding for Libraries",
      "year": 1906,
      "rights": "Public domain (Project Gutenberg, pre-1930 text)",
      "entries": 250
    },
    {
      "siglum": "RE",
      "id": "cool",
      "author": "Roberts, Matt T.; Etherington, Don",
      "rights_tier": "us-government-flagged",
      "work": "Bookbinding and the Conservation of Books: A Dictionary of Descriptive Terminology",
      "year": 1982,
      "rights": "US Government publication (Library of Congress), published openly in electronic edition by CoOL. Not a Gutenberg/pre-1930 public-domain text -- verify rights before reprinting rather than quoting.",
      "entries": 3861
    }
  ]
}