I think John Kashmanian should definately be on the list, after seeing his amazing memorabilia collection in his book "Baseball Treasures"
http://www.amazon.com/Baseball-Treas.../dp/0887404928 One of the greatest books ever produced on vintage baseball memorabilia!
I also believe the collection of "Dick Dobbins" who lived in the bay area, had one of the greatest collections also.
http://www.oac.cdlib.org/findaid/ark:/13030/kt7c6037n5/