This is a virtual multi-cache, thanks to a suggestion by Rob Wheeler. If you visit these three sites you'll find out a bit of the early history of Silicon Valley and get a chance to see how humble its origins were.
To see the first cache you have to find the sign that tells you why the store used to be important to the history of Silicon Valley. Email me the year that the sign contains and we'll both know. This is the original "Silicon Valley Slept Here" cache at N 37 24.308 W 122 06.667
If you're not shy, go inside the store, check out the ceiling, and ponder how things differed then from the way they are now. The current tenants tell me that it's the original ceiling, by the way.
The Second cache is a rather famous garage, recently purchased by the company who's founders started here. Your email should tell me the name of the professor who suggested they found the company. This cache is at N 37 26.574 W 122 09.268
The Third cache is a state historical plaque. Your email should tell me who invented what on this site in 1959. This cache is at N 37 25.308 W 122 06.200
Don't post any spoilers in your log, encrypted or not.