In case you're wondering, human services is an actual function of the U.S. government. The department is called Health and Human Services, and there's no healthier human service than sex. You can guess the plot of 1967's Lust Candidate without too much trouble. An honest politician squares off for a governorship against a slick media star, while all sorts of craziness goes on behind the scenes with wives, mistresses, and a hot young stepdaughter.

We love the art. It's often attributed to John Duillo, but Doug at the (now mostly defunct) blog whatgetsmehot suspected Elaine Duillo was behind this one, and back in 2010 sent an image of the cover to her. The answer she gave was revealing. Apparently, she painted the blonde on the right because the people at Chevron Books didn't didn't like the figure the first artist had produced. “They asked me to paint the blonde again. Then they stripped it in and paid me well to do this for them.”

To our eyes it looks like one artist wielded the brush here, but we presume Elaine Duillo knows her own work. We also presume she knows whether she replaced her husband's work, so it looks like those John Duillo attributions could be wrong. We'll put this in the two-thirds-unknown bin for now. That's a new bin, but there you go.

American author John D. MacDonald’s popular Travis McGee series—all with colors in their titles—was published between 1964 and 1985. In late 1973 MacDonald released The Turquoise Lament, and from that point forward the McGee books never again featured high-quality pulp art. Lamentable, indeed. Above is a collection of covers spanning the golden period of McGee cover art, from 1964 to 1973. The artists were Ron Lesser, Elaine Duillo, Robert McGinnis, and others.