I usually don't like the good girls, but Classic Good Girl and Romance Covers have cool covers and the girls are a little naughty and evil. Those girls are pin ups feature stories of love and romance and as the site says Good girls were usually athletic, smart women who might fall into precarious positions.

Plus:
Visit also the other two great galleries of comics cover: Classic Super-Hero and War Covers and Classic Crime and Horror Covers (maybe Mark like this last gallery).