Bob Koehler, owner of Bob Koehler Cards and co-author of The American Association Milwaukee Brewers, died April 26 in Brookfield, Wis. He was 67.

Koehler, a long-time participant of the National Sports Collector and SABR conventions, was a well-known baseball historian and a member of the Old Time Ball Players Association and the Milwaukee Braves Historical Society.  He was at every National Convention except the first one, and last year, when he was ill, and he still had a table there in Cleveland. For many years he was also a frequent advertiser in the pages of Sports Collectors Digest.