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Union Island California Historical topographic map, 1:31680 scale, 7.5 X 7.5 Minute, Year 1914

~ Union Island CA topo map, 1:31680 scale, 7.5 X 7.5 Minute, Historical, 1914

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Union Island, California, USGS topographic map dated 1914.

Includes geographic coordinates (latitude and longitude). This topographic map is suitable for hiking, camping, and exploring, or framing it as a wall map.

Printed on-demand using high resolution imagery, on heavy weight and acid free paper, or alternatively on a variety of synthetic materials.

Topos available on paper, Waterproof, Poly, or Tyvek. Usually shipping rolled, unless combined with other folded maps in one order.


  • Product Number: USGS-5500137
  • Free digital map download (high-resolution, GeoPDF): Union Island, California (file size: 5 MB)
  • Map Size: please refer to the dimensions of the GeoPDF map above
  • Weight (paper map): ca. 55 grams
  • Map Type: POD USGS Topographic Map
  • Map Series: HTMC
  • Map Verison: Historical
  • Cell ID: 46347
  • Scan ID: 296577
  • Survey Year: 1912
  • Datum: Unstated
  • Map Projection: Unstated
  • Map published by United States Geological Survey
  • Map Language: English
  • Scanner Resolution: 600 dpi
  • Map Cell Name: Union Island
  • Grid size: 7.5 X 7.5 Minute
  • Date on map: 1914
  • Map Scale: 1:31680
  • Geographical region: California, United States

Neighboring Maps:


All neighboring USGS topo maps are available for sale online at a variety of scales.


Spatial coverage:

Topo map Union Island, California, covers the geographical area associated the following places:

- Crossroads Christian Church - The Church of Jesus Christ of Latter Day Saints - California Highway Patrol Valley Division - Tracy - Church of Christ - Melville S Jacobson Elementary School - El Pescadero Park - Tracy Fire Department Station 96 - Tracy Police Department Substation - Union Island - Slayter Park - El Pescadero - Duncan-Russell Continuation High School - Union Island Gas Field - Fabian and Bell Canal - Grant Line Canal - Ornellas Dairy - Tracy Bible Fellowship Church - Kenner Park - Salmon Slough - Larch Clover Park - McKinley Village Shopping Center - Amazing Grace Church True Tabernacle of God - Moreda Valley Dairy Number 4 - Naglee School (historical) - Delta Island Elementary School - Sugar Cut - North Elementary School - Tracy Police Department Substation - Family Bible Church - Tracy Seventh Day Adventist Church - Valley Shopping Center - Tracy Ball Park - Tom Paine Slough - Tracy Shopping Center - Lower Main Canal - Trinity Baptist Church - Undine School (historical)

  • Map Area ID: AREA37.87537.75-121.5-121.375
  • Northwest corner Lat/Long code: USGSNW37.875-121.5
  • Northeast corner Lat/Long code: USGSNE37.875-121.375
  • Southwest corner Lat/Long code: USGSSW37.75-121.5
  • Southeast corner Lat/Long code: USGSSE37.75-121.375
  • Northern map edge Latitude: 37.875
  • Southern map edge Latitude: 37.75
  • Western map edge Longitude: -121.5
  • Eastern map edge Longitude: -121.375

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