The latest addition to my Jazz Research blog examines the Art Pepper Discovery sessions.
http://jazzwestcoastresearch.blogspot.com/2016/04/art-pepper-discovery-sessions-james-a.html
Over the years many discographers have wondered why there were no alternate takes from the first recording session on March 4, 1952. I think that the answer lies with the fact that the session was financed by Robert Scherman using his Skylark Records license. Scherman was a thrifty producer and saving alternate takes was not something he practiced.