Yes, LSD was by AH&J, their first big hit, upon which they immediately broke up.

Win Stracke has come up on Mudcat before; his whole album is the real thing.

the first cut on Fred Holstein's first album is "Old Chicago" (the album is "Chicago and Other ports").

Chicago Street Names is/was routinely played on WFMT's "Midnite Special," Saturday eve. I have a tape of it, but it IS a comedy bit and not a song. Good tho'

Paul Butterfield Blues Band was out of Chicago.

I'll think about it and see what else I can come up with.