Yes, I had a hand in it, along with several others.
This set collects every known--and a few that have never been documented--transcription that Cole recorded prior to his start at Capitol. It cobbles together everything for Standard, D&S, Keystone, and even one session for MacGregor in 1941 (the trio recorded a bunch for MacGregor in 44-45, but that is not covered here). Obviously, much of this material has come out over the years, but this is the first time that I know of that it has all been presented together, along with several studio/commercial recordings.