These “work diary” volumes encompass the years 1963-1997. Many of the diaries contain copious daily entries. From 1991 onward, there are progressively fewer entries in the diaries; the 1997 volume has no entries at all.

Diaries cover Sackson’s activities related to game design, development, and collecting, including ideas for games and the strategies involved in them; games he play-tested with family and friends; information about games he purchased and heard about; relevant books, magazines, periodicals, and articles he read and acquired; business activities with his agent and with game manufacturers; and trips taken to publicize his games and to look for games he wanted to collect. Each bound volume is 5 inches wide and 8 inches high and contains 1 page per day. Indexes are located in the front and/or the back pages of many volumes. From 1963-1969 Sackson indexed each diary by the name of each game, book, and magazine/periodical referenced in his entries. For the 1970-1988 diaries, he indexed by the name of each person, game, book, and magazine/ periodical referenced in his entries (with the exceptions of 1984 and 1986 where no indexes are included in the volumes). For 1989-1997, there are no indexes.