- Publication Series: Ballantine Adult Fantasy Pub. Series Record # 26
- Webpages: Blogspot, home.epix.net, Wikipedia-EN
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Note: An imprint of Ballantine Books between 1969 and 1974, edited by Lin Carter. The books have a distinctive Unicorn's Head colophon on the cover and include an introduction by Lin Carter. There are also 18 Ballantine books before, and two after, the main series of 65 books. Numbering from Lin Carter's Imaginary Worlds or extrapolated from that source.