I had not heard of those. For me the most in demand proofs would be the 60 Cimoli/Hadley/Throneberry in different uniforms, although as I recall Bob Lemke said the ones he saw had regular backs, so maybe prototypes or extremely rare variations. Next would be the 77 proofs listed in SCD with poses different from their regular card, the most noted being the R Jackson as an Oriole. I think Bob had an uncut proof sheet with all of them in his office at SCD
I would love to see the Cater and Nottebart as well, maybe a scan ?
Edited=--it is mentioned here
http://r.search.yahoo.com/_ylt=A86.J...WOhZFn2Q9iFrE-
http://r.search.yahoo.com/_ylt=A0LEV...usCx6PUyDxpG8-
http://r.search.yahoo.com/_ylt=A0LEV...OTdBs7vvxlFzk-