New Worlds Quarterly (U.S.)

US editions of the British volumes #1-4, 6 (as #5) and 7 (as #6).

Publishers:

• Berkley Medallion; New York, #1-4
• Avon Equinox; New York, #5, 6

New Worlds Quarterly (U.S.)

• 1971: #1; #2
• 1972: #3; #4

New Worlds (U.S.)

• 1974: #5
• 1975: #6