70sscifiart: On the left, a 1970 cover by Frank Kelly Freas for Ace Books. On the right, a 1972 cove
70sscifiart: On the left, a 1970 cover by Frank Kelly Freas for Ace Books. On the right, a 1972 cover by the same artist for the same book for the same publisher… but with different art. Presumably the publisher wanted more lightning bolts and cleavage. -- source link