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Humboldt County · California

Surveys Research

Research category

Maintained by The Urban Road Association

Research category · Updated 8 September 2026
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Browse surveys across the library’s articles and source records. Categories describe research subjects, not legal or geographic boundaries.

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Articles and records#

  • Humboldt Meridian research center#

    Explore the Humboldt Meridian, its 1853 initial point, township and range, historical survey methods, Eureka land-office archives, and Jay Smith Road survey records.

    Topic hub
  • Jay Smith Road maps & survey sources#

    A source-based guide to historical maps and survey sources relevant to Jay Smith Road in Humboldt County, including the 1876 township plat and 1952 proposed road map.

    Topic hub
  • 1876 Township 2 South, Range 3 East plat#

    HTML reference record for the 1876 Township 2 South, Range 3 East, Humboldt Meridian plat, county survey record copy 100 UR 445.

    Archival record · 1876 · County survey copy
  • 1952 proposed road right-of-way map#

    HTML reference record for the 1952 proposed road right-of-way map, county record 3 UR 137, in the Jay Smith Road history library.

    Archival record · 1952 · County map copy
  • A History of the Rectangular Survey System#

    C. Albert White’s federal survey history supplies the October 1853 Humboldt initial-point account and the broader history of rectangular surveying.

    Archival record · 1983 · Bureau of Land Management
  • BLM cadastral survey manuals and research tools#

    A source gateway to historical survey manuals, terminology, corner evidence, and modern cadastral resources.

    Archival record · Bureau of Land Management
  • Eureka land-office records in National Archives Record Group 49#

    A collection-level guide identifying Eureka land-office material and Humboldt Meridian township maps from 1856–1894.

    Archival record · National Archives
  • From Original Survey to Modern GIS#

    How GLO plats, field notes, resurveys, county surveys, recorded documents, assessor maps, and GIS serve different purposes.

    Reference article
  • How to Read Township, Range & Section#

    An illustrated guide to T2S, R3E, Section 27, quarter sections, and aliquot parts, with a clearly schematic educational PLSS grid.

    Reference article
  • Humboldt Meridian Schematic#

    An original 3840 × 2160 educational grid composition, clearly distinguished from a historical plat or official survey map.

    Wallpaper
  • Surveying in Redwood Country#

    Chains, field books, survey corners, bearing trees, and the physical work of nineteenth-century surveying, with BLM historical sources.

    Reference article

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