San Francisco Bay Area Directory 1.2
the author of this app says:
Per Annum, Inc. has been publishing its city information diaries since 1979. Now their comprehensive city listings are available for the Palm handheld.
With categories ranging from restaurants and theaters to government agencies and 24-hour electricians, Per Annum City Directories offers the best part of the yellow pages in a format that's both easy and convenient.
The program works on any handheld running the Palm OS version 2.0 or higher.