Thrust.  Nos. 1 (February 1973); 2 (October 1973); 3 (January 1974); 4 (April 1974); 7 (Spring 1976); 8 (Spring 1977); 9 (Fall 1977); 10 (Spring 1978); 11 (Fall 1978); 12 (Summer 1979); 13 (Fall 1979); 14 (Winter 1980); 15 (Summer 1980); 16 (Fall 1980); 17 (Summer 1981); 18 (Winter/Spring 1982); 19 (Winter/Spring 1983); 20 (Summer 1984); 21 (Fall 1984/Winter 1985); 22 (Summer 1985); 23 (Winter 1985); 24 (Summer 1986); 25 (Winter 1986); 26 (Spring 1987); 27 (Summer 1987); 28 (Fall 1987); 30 (Summer 1988); 31 (Fall 1988); 32 (Winter 1989); 33 (Spring 1989); 34 (Summer 1989); 35 (Winter 1990), 1973-1974, 1976-1987, 1988-1990, 1, Box: 84. M. Horvat Science Fiction Fanzines Collection, MsC0791. University of Iowa Special Collections. https://aspace.lib.uiowa.edu/repositories/2/archival_objects/156652 Accessed April 18, 2024.