Looking for information and/or relatives of the following people buried at the Frisco cemetery: Ralph & Virginia Porterfield, Con Eklund, Gus Levine, William & Elizabeth Staley, Charlie Masterson, William W. Rose, Robert & LD Brown, Sierra & Joseph Young, Jim Parker, Stephen Thatcher

There are no cemeteries in San Francisco unless he/she was military and then they would be buried at the Presidero. . All other bodies were moved out of SF a long time ago. Most went to various cemeteries in Daly City which is right below(South) of SF. Check those cemeteries. There are many. IF Jewish then they would be in the Jewish Cemetery. Just search Daly City Cemeteries CA> Hope this helps. You can always call them too once you have the numbers

Trails to the Past has been working on compiling photos of Colorado cemeteries. Here is the link:
http://coloradogravestones.org/
Not all headstones have been documented yet, but for Frisco, the majority of the cemetery is done. Very small site. You can search for Summit county, then narrow down to Frisco.

I have been working on Summit genealogy sources for a couple months... although I don't have anything specific (yet) on the people you mentioned, there are several sources listed on our site for Summit County:
http://www.rootsweb.ancestry.com/~cosummtp/

See if anything there helps you. Let me know if there is something you would like to see added or anything further I can help you with. (Live in Summit county, so look ups can be done.)

find a grave.com is a great site to get grave pictures too!