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1973–1975[]

Tactical Studies Rules

Tactical Studies Rules (TSR) was formed in 1973 as a partnership between Gary Gygax and Don Kaye. In 1975, Don Kaye passed away due to a heart attack, and his role in the company was taken over by his wife Donna Kaye. Later that year, the partnership was legally dissolved and succeeded by the newly-formed corporation called TSR Hobbies, Inc..

Tactical Studies Rules
TSR Hobbies, Inc.
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