PRO by Gordon R. Dickson vintage 1978 Ace FIRST PRINTING paperback, VG/Fine

The Dragon and The George by Gordon R. Dickson First Edition 1976 Vintage Sci-Fi

Pro By Gordon R. Dickson Ace Science Fiction 1978 Paperback

Lost Dorsai by Gordon R Dickson ACE Books SciFi Vintage 1980 Paperback 1st Print

Pro Gordon R Dickson Ace Science Fiction Illustrated Novel 1978 First Printing

GUIDED TOUR by Gordon Dickson 1988 paperback SCI FI

The Outposter by Gordon R. Dickson 2nd Printing Vintage Sci-Fi Paperback Book

Steel Brother Gordon R. Dickson 1985 First Printing Paperback Sci-Fi TOR