When you say CA. do you mean Canada or California? For California, you can get USGS or Tom Harrison maps; for Canada. maybe Phat will post on this-he's up that way.
california; mostly looking for maps of the PCT system and some of the wilderness areas in the sierras ( good quality topos with marked trails),
our local sports chalet used to have nice topos but havent seen them there lately,
BTW thanks for all the great suggestions everyone i think my REI store would probably be my best source.