Membership - correspondence, June 1968 - July 1970, 1968-1970 Box 391 Unit ID: 67 Date: June 1968 - July 1970, 1968/1970
Membership - correspondence - subscribers, September 1970 - October 1972, 1970-1972 Box 391 Unit ID: 66 Date: September 1970 - October 1972, 1970/1972
Membership, December 1986 - March 1987, 1986-1987 Box 422 Unit ID: 450 Date: December 1986 - March 1987, 1986/1987