Here’s a beautiful timeline of the San Fernando Valley created for our Historical Society. It gives you a quick look at the last few thousand years or so.
http://lahistoryarchive.org/resources/San_Fernando_Valley/timeline.html
These are historic photos and maps to help set the scene of how the Valley has evolved since Europeans arrived in 1791.
http://lahistoryarchive.org/resources/San_Fernando_Valley/resources.html
Read what the creator of the timeline, Tiffany Do, had to say about working on this project. As she says, SFV is The Valley, not just any run-of-the-mill valley.
http://lahistoryarchive.org/resources/San_Fernando_Valley/about.html