Day of the Minotaur by Thomas Burnett Swann. Published by Ace Books in 1966. Part 2 of of the Minotaur Trilogy.  

1st Book Publication!

Gray Morrow Artwork on cover and frontispiece. Highly regarded, Morrow did both paperback & comic illustration for both DC & Marvel, and a host of other comic publishers.

All books are mailed in protective sleeves, within a padded envelope. Will combine shipping.