- Aspen, no. 7 (Summer 1970) [1 of 3]. The British Issue, edited by Mario Amaya; designed by John Kosh.
- Aspen, no. 7 (Summer 1970) [2 of 3]. Ian Hamilton Finely, "Wave/rock."
- Aspen, no. 7 (Summer 1970) [3 of 3]. Yoko Ono and John Lennon, phonograph recording.
- Aspen, no. 8 (Fall-Winter 1970-71) [1 of 3]. The Fluxus Issue, edited by Dan Graham, designed by George Maciunas.
- Aspen, no. 8 (Fall-Winter 1970-71) [2 of 3]. "Strata: A Geophotographic Fiction", Robert Smithson.
- Aspen, no. 8 (Fall-Winter 1970-71) [3 of 3]. US subscription order form.
- Aspen, no. 9 (Winter-Spring 1971). The Psychedelic Issue, edited by Angus MacLise and Hetty MacLise.