Some of my favorite Delmarks that I don't thing have been mentioned:
The Legend of Sleepy John Estes
Sleepy John Estes: Brownsville Blues
Curtis Jones: Lonesome Bedroom Blues
The Blues World of Little Walter
Magic Sam: Live
The Magic Sam Legacy
Memphis Slim U.S.A.
Robert Nighthawk: Bricks in My Pillow
Arthur "Big Boy" Spires/Morris Pejoe: Wrapped in My Baby
Yank Rachell: Mandolin Blues
Roosevelt Sykes: Raining in My Heart
Junior Wells: Blues Hit Big Town - classic '53/'54 sides w. Elmore James, Muddy, The Aces, Otis Spann - not to be missed!
Otis Spann, Sunnyland Slim, Little Brother Montgomery ... : Blues Piano Orgy
Eddie Clearwater, Morris Pejoe, Harmonica George ... : Chicago Ain't Nothing But a Blues Band
Babs Gonsalez, Artie Simms, The Four Blues ... : East Coast Jive
Dennis "Long Man" Binder, Eddie Ware, Ernest Cotton ... : Long Man Blues
Magic Sam, Eddie Shaw, Louis Myers ... : Sweet Home Chicago
Jimmy Coe, Doc Sausage, Cozy Eggleston, Eddie Chamblee, Charlie Ferguson, King Curtis, TJ Fowler ... : Honkers & Bar Walkers Vols. 1, 2, &3
Lin Halliday: Airegin
Bud Powell: Bouncing with Bud