Actually, it probably had a bigger print run than any comic book he was ever in but was likely lining bird cages the next day. These were illustrations Wrightson did for the Baltimore Sun in mid-1968. Were there more? Possibly. These were all done to illustrate specific articles. Note the "Neal" on the one. A shoutout to Adams? Seems unlikely Wrightson would have met Neal by this point but possible. Adams had been drawing for DC for a year or so already, though, and everyone took notice of him immediately.