What kind of places? Places that dark and dirty.
Places with
junk arranged in piles. Places with vacuum tube equipment.
(I would love to find an example of a vacuum tube analog computer)
Be sure to hit C&H Surplus on Colorado Blvd in Pasadena, All
Electronics in Van Nuys, and APEX in San Fernando if you head
through Southern California.
Places you won't want your kids to play in.
There are parts of APEX that you need a hard-hat to enter :-).
Tim.