The HSU Library has in the Humboldt Room has USGS Orthophotoquad Maps. These are USGS 1:24,000 orthophoto "maps", the Humboldt Room coverage for northwestern California dating between 1976 and 1990. Please visit the Humboldt Room during our open hours to view.
TerraFly is a web-enabled system designed at Florida International University, to aid in the visualization of spatial and remote sensed imagery. The advanced search option allows users to enter an address, coordinates, or browse a city.
The National Map’s Historical Topographic Map Collection (HTMC), which started in 2011, is to provide a digital repository of USGS 1:250,000 scale and larger maps printed between 1884, the inception of the topographic mapping program, and 2006.