Third image is the only new one on here (and it could be jiv'n me, too*), the back cover of Hot Stuf' #4. Don't know if HS was a fanzine or just a comic (definitely Harvey's HS is a kid's comic), but irregardless, Kline was a fanzine artist. He, along with Fujitake and Fantucchio and Art Cooper and Ned Young make the fistful I call The Fanzine Fab Five
*From the classic blues verse "Nobody loves me but my momma, and she could be jiv'n me, too"