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.


College of the Canyons GIS

Are you looking to learn more about GIS than just how to push buttons in the software?  Want to build a GIS skill set that will set you apart from others?  Desiring to be exposed to the practical and real world use of GIS?  Then come join me at College of the Canyons and sign up for GIS 101, Introduction to Geographic Information Systems.  The class will be challenging and rewarding!  Also, your earned units are UC/CSU transferrable.

Registration for the Spring semester has started, so make sure to register early.  The GIS class will meet at the Valencia campus every Wednesday from 6:30pm to 9:35pm, February 8 to May 31.  The textbooks for the course can be found here.

Feel free to contact me, Michael Carson (, if you have any questions.

Rio Hondo College GIS

Start off the new year right and take a GIS class or two at Rio Hondo College.  Courses start the week of January 30th.  Apply for admission and register for classes entirely online. Available courses include two Introduction to GIS (GIS 120) courses including one located off site at the LA County Department of Public Works (900 S Fremont Ave, Alhambra), also offered is Cartography (GIS 221), Crime Mapping (GIS 281) and Intermediate GIS (GIS 281).

To register for classes, you must first apply for admission (entirely free online). Directions for applying for admission and registering for the classes can be found at  For additional information, contact Prof. Warren Roberts (P.S. Did you know select Rio Hondo GIS courses are transferable courses to CSU and other universities?)