In my research, I’ve come across many documents that I would like to share, when possible. Some of these are public domain and are in PDF format.  Documents created by Michael Ballard are copyrighted and are not public domain. Many are highway and geology related but don’t necessarily relate to the topics on this website.




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Your Resource For Highways, Geology, Railroads, History, Bicycling, And More Throughout Southern California Since 1995.

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