{
  "name": "The paper trail of the U.S. survey foot, 1866–2023",
  "desc": "One row per document from the 1866 Metric Act to the 2023 State Plane policy: date, citation, what it says about the foot, and how fully it was read.",
  "lic": "CC BY 4.0",
  "lic_url": "https://creativecommons.org/licenses/by/4.0/",
  "by": "The Yardstick Almanac",
  "url": "https://theyardstickalmanac.com/units/us-survey-foot/",
  "from": [
    "Mendenhall Order of April 5, 1893, and the 1866 table, as reprinted in NBS Special Publication 447",
    "Foot, yard, inch and pound definitions: National Bureau of Standards and U.S. Coast and Geodetic Survey notice, Federal Register 24 FR 5348 (July 1, 1959)",
    "State counts for the State Plane Coordinate System of 1983: NIST and NOAA notice, Federal Register 84 FR 55562 (October 17, 2019)",
    "NIST and NOAA notice, Federal Register 85 FR 41560 (July 10, 2020)",
    "Units built on the foot: NIST and NOAA notice, Federal Register 85 FR 62698 (October 5, 2020), Table 1",
    "NOAA National Geodetic Survey, State Plane Coordinate System of 2022 Policy (effective July 1, 2023), sec. II.E.1",
    "NIST web page \"U.S. Survey Foot\" (read 2026-10-31)"
  ],
  "how": "Compiled by The Yardstick Almanac from the data listed",
  "data_by": [
    "Summarized from NBS SP 447, 24 FR 5348, 84 FR 55562, 85 FR 41560, 85 FR 62698 and the NGS SPCS2022 Policy, 2026-11-01, CC BY 4.0"
  ]
}