'The wizard of Venus' originally published, New York: Ace Books, 1964.
'Pirate Blood' originally published, New York: Ace Books, 1970.
OBNB doesn't sell books, but you may be able to find a copy at one of these websites:
The wizard of Venus; [and, Pirate Blood] by Edgar Rice Burroughs. ISBN 0450013537. Published by New English Library in 1973. Publication and catalogue information, links to buy online and reader comments.
![The wizard of Venus; [and, Pirate Blood]](http://ecx.images-amazon.com/images/I/51iyXusaEML._SL160_.jpg)