Late reply: I'm certain that Sheffield did tape backups for every direct-to-disc album. Missing Linc Vol. II, Thelma Houston and Dave Grusin were the first albums they released on CD in 1984, and all of those were made from the backup tapes.Sheffield did tape backups for at least some (maybe all) of their D2D releases. After some of the early D2D releases sold out - I can think of at least the Dave Grusin and Thelma Houston albums, they released vinyl made from the tape backups. I have a 15ips 2 track copy of the Grusin tape back up. I have never done a direct comparison with my D2D vinyl copy. I did play that quite a bit, since I liked several of the songs. I did make a digital 192/24 copy of all the Sheffield D2D records I had (I think all but one or two very early Lincoln Mayorga albums and the Thelma Houston, which I somehow never got as a D2D, only the reissue.
Larry
It wasn't until 2008 that Lincoln Mayorga & Distinguished Colleagues (S-9) was finally released on CD on the 2-disc 40th Anniversary CD set, and those were needledrops done by Seth Winner. (https://www.discogs.com/release/149...inguished-Colleagues-40th-Anniversary-Edition)
The early Sheffield Records albums were recorded to direct to tape, and those go back to the early-'60s. In the notes on some of the early Sheffield Records album jackets it lists the microphones and tape recorder used. Lincoln Mayorga & Distinguished Colleagues (S-9) was the first direct-to-disc album, and it was on the Sheffield Records label; same with Missing Linc Vol II (S-10); both had "Laboratory Series" on the jackets and labels. It wasn't until Missing Linc - Volume III (Lab-1) that the Sheffield Lab label was created.
To add to the confusion, there were albums released on Sheffield Records and Townhall labels during the same years that Sheffield Lab albums were being released.

Townhall Records Discography | Discogs
Explore music from the Townhall Records label. Discover what's missing in your collection and shop for Townhall Records releases.


Sheffield Records Discography | Discogs
Explore music from the Sheffield Records label. Discover what's missing in your collection and shop for Sheffield Records releases.
