File [Part 1] Exclamation Triangle Solid Online In: David D. Dexter papers, 1960-1963, 1980-1981 (majority within 1960-1963) » Recordings, 1961-1963 » Untitled Sound Recordings » Tape 1, Undated
File Tape 2, Undated 1 audiotape (7.5 ips; 7 in.) Exclamation Triangle Solid Online In: David D. Dexter papers, 1960-1963, 1980-1981 (majority within 1960-1963) » Recordings, 1961-1963 » Untitled Sound Recordings
File [Part 1] Exclamation Triangle Solid Online In: David D. Dexter papers, 1960-1963, 1980-1981 (majority within 1960-1963) » Recordings, 1961-1963 » Untitled Sound Recordings » Tape 2, Undated
File Tape 3, Undated 1 audiotape (7.5 ips; 7 in.) Exclamation Triangle Solid Online In: David D. Dexter papers, 1960-1963, 1980-1981 (majority within 1960-1963) » Recordings, 1961-1963 » Untitled Sound Recordings
File [Part 1] Exclamation Triangle Solid Online In: David D. Dexter papers, 1960-1963, 1980-1981 (majority within 1960-1963) » Recordings, 1961-1963 » Untitled Sound Recordings » Tape 3, Undated
File Tour Purchases Box 1 Online In: David D. Dexter papers, 1960-1963, 1980-1981 (majority within 1960-1963) » Miscellaneous, 1960-1961, 1980-1981