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historical topo map of San Joaquin County, CA in 1978

1978 Map of Union Island

USGS Topo · Published 1978

This historical map portrays the area of Union Island in 1978, primarily covering San Joaquin County. Featuring a scale of 1:24000, this map provides a highly detailed snapshot of the terrain, roads, buildings, counties, and historical landmarks in the Union Island region at the time. Published in 1978, it is the sole known edition of this map.

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Map Details

Date Portrayed1978
Date Published1978
PublisherU.S. Geological Survey
Map TypeTopographic
Scale1:24000
Physical Dimensions21.4 x 26.6 inches

Editions of this 1978 Union Island Map

This is the sole edition of this map. No revisions or reprints were ever made.

Historical Maps of San Joaquin County Through Time

44 maps found

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Source Details

SourceU.S. Geological Survey
CopyrightPublic Domain