Olga Rich - Tacuara!
Holloway House Books 181, 1969
Cover Artist: Don Weller
"White slavery and the Nazi party in Buenos Aires."
Olga Rich was a pseudonym of Paul Hugo Little (born Paul Hugo Litwinsky). Little supposedly began writing soft-core porn when he was 48 using hundreds of pseudonyms... he is referred to as the man of 1000 pseudonyms. It is claimed that he wrote over 700 of these pulp fiction novels.
He was also a food critic, music critic, chess critic, English teacher and an advertising copy writer.
More info here:
blog.chess.com/batgirl/serendipity 