Early 60s?
Yes. The two lou Blackburn albums are Two Nite Samba and the other one on Imperial are from 62 (IIRC) : both with tpt Freddie Hill and Horace Tapscott IIRC/2). Fine session, reissued on CD o with the title : Perception (anothe reissue on "blue note") Fine music. Quite tough to find on original issue.
Yes, I have the cd. I thought I might dispose of the vinyl. Shame it's not in better shape. It could well be an original stereo issue but I've never seen another copy or another Imperial album for that matter,
Some imperial Mono were issued with stereo stickers. Stereo imperial are hard to find (and sometimes different mix or take, like the Warne Marsh)