CHS Cartographic Collection

52 19th and early 20th century maps of California have been added to the California Historical Society’s new Digital Library. The images represent a sampling of unique or uncommonly held titles ranging geographically from an 1863 map of the copper region of Del Norte County in the north, to a circa 1866 Topographical Map Showing the Locations of the Sutro Tunnel and the Comstock Lode, to a colorful 1913 townsite map of Date City (now called Calipatria) in Imperial County in the south. In between are city, county, mining, real property, water-supply, road, and railroad maps of various localities throughout the state.  Check it out!


Protected Areas Database of the US

The Protected Areas Database of the United States (PADUS) is the official inventory of public parks and other protected open space. With more than 3 billion acres in 150,000 holdings, the spatial data in PAD-US represents public lands held in trust by thousands of national, State and regional/local governments, as well as non-profit conservation organizations.

It is possible to download data for the entire US or a state from the Data page. Data can be downloaded in Shapefile or Geodatabase format.  A fact sheet can be found here.  To view data in a viewer or download the data click below.