A collection of correspondence, telegrams, bulletins, and newspaper clippings related to night baseball and its history.

A collection of scorecards for games played between 1929 and 1968, primarily Washington Senators games.

A collection of scorecards ranging from Major Leagues, primarily the Colorado Rockies, to the Minor Leagues and amateur games, 1955-2023.

A collection of 20 scorecards and souvenir scorebooks of Major League games dated between 1944 and 1969.

A collection comprised primarily of scorecards but there are programs, clippings, postcards, and baseball cards.

Mary Collamore's scorecards comprise of 30 folders containing hand-made scorecards for World Series games played between 1957 and 1991. Along with scoring the games, Mary recorded information such as date and time of game, weather conditions, attendance, field dimensions, National Anthem singers, batboys, who threw out the first pitches, and the stadiums each game was played in. She also added notes about the players along with opinions about calls and plays.

A collection of programs, scorecards, game notes, itineraries, invitations, tickets, and media guides relating to the All-Star games, starting in 1933.

A collection of American and National League playoff programs, which include Division and League Championship Series.

A collection of Montreal Expos unscored scorecards dated between 1973 and 1996.

A collection of scorecards, scoresheets, rosters, and tickets related to the annual National Baseball Hall of Fame games that took place from 1940 to 2008.