In 1946 or 1947, Weeks began collaborating with Charles A. Browne on a retrospective history of the American Chemical Society. Browne was responsible for the structure of the project and the first nine chapters. After Brownes death in 1947, Weeks brought the project to completion, and A History of the American Chemical Society—Seventy-five Eventful Years' was published in 1952. It was welcomed as avoiding the pitfalls common to commissioned histories.