Records
Meeting Minutes, 1902-1932, with loose items such as programs, by-laws, and one page of notes on alumni
Budget and Financial information, 1930-1952
Member Lists, Meeting Minutes, Budget and Financial, 1932-65 and 1967-68
Charter Members List, 1902, and subsequent members through 1933
Constitution and Signatures of New Members, 1934-46
Members of the Stanford Chapter, The Society of the Sigma XI, 1948 -1966
Sigma XI: A History of the Stanford Chapter 1901 – 1976, Frederick W. Crawford (2 copies)
Sigma XI Centennial Celebration, The Scientific Research Society of North America, Stanford Chapter, program, 6 June 1986
Manual of Procedure 1985, For Chapter and Club Officers of Sigma XI, The Scientific Research Society
Sigma XI: Half Century Record and History 1886 – 1936