"Meet the Men Behind the Creeper," a text piece from 1968’s Showcase #73, the issue that introduced DC’s jester of justice himself - the Creeper! As usual, Steve Ditko is ridiculously tight-lipped about his personal life, so instead we get an in-depth look at Creeper’s co-creator, Don Segall. So far as I have discerned, “The Coming of the Creeper" and a single Inferior Five story were Segall’s only work at DC, with the rest of his time in comics spent at Tower and Dell (where he wrote about half of Kona, Monarch of Monster Isle, and may have created Dell’s bizarre superheroic versions of Dracula and Frankenstein).
After the initial Creeper story, Segall apparently left comics for television writing. Sadly, he passed away in 1994, but master comics historian Mark Evanier has a lovely write-up on him here.