Q: I have two issues that are identical except for inside front cover ad, and the date on the cover. One says June 1974 the other says June 1975. What’s up with these two issues?
A: Both issues are for June 1975. About half the copies had the wrong year on the cover. They caught it before they were all printed. In general, the subscribers got the one with the “1974”, while the “1975” issues went to newsstands and stores. I never noticed that the ad on the inside front cover was also changed. I don’t know what the story with that is. I used to work in the magazine biz. I think it’s possible they had different rates for newsstand and subscription sales, hence different editions printed with a few ads swapped out.