- Aspen, no. 1 (1965) [1 of 3].
- Aspen, no. 1 (1965) [2 of 3]. Letter from Phyllis Johnson.
- Aspen, no. 1 (1965) [2 of 3]. "The Benedict House: A Sanctuary for Deer, Peacocks, and People," Peggy Clifford.
- Aspen, no. 3 (1966). The Pop Art Issue, designed by Andy Warhol and David Dalton.
- Aspen, no 5+6 (1967). The Minimalism Issue, edited and designed by Brian O'Doherty; Art Direction by David Dalton and Lynn Letterman.
- Aspen, no 5+6 (1967). Audio reel.