Response to the
Rifftides post on hard bop has created a lively discussion.
You can read the comments here. In addition to the Savoy CD called
Hard Bop that was, more or less, the focus of the piece, the commenters mention or allude to other albums. If you're thinking of expanding the hard bop (if there is such a thing) section of your library, or starting one, here are a few worthy candidates. Other nominations will be accepted in the Comments" section. The links will take you toAmazon.com pages that in most cases provide audio samples.

Art Blakey, A Night At Birdland, Vols. 1 & 2 (Blue Note), 1954
Horace Silver and the Jazz Messengers (Blue Note), 1954-5
Max Roach & Clifford Brown, Study In Brown (EmArcy), 1955
The Adderley Brothers, The Summer of '55 (Savoy)
Sonny Rollins Plus Four (Prestige), 1956
Sonny Clark, Cool Struttin' (Blue Note), 1957
Art Blakey's Jazz Messengers, Paris Olympia - 1958 (Mercury)
Horace Silver Trio and Quintet (Blue Note), 1959

Hank Mobley, Roll Call (Blue Note), 1960