19 of the 30 titles were in the 1979 reprints, and two more titles (Tipsy and Dirtycell) appeared in Flashback 2.
I thought that statement didn’t sound right either.
A number of years ago, after The Gallery came out in 2000, out of curiosity I did a study on how much of each series was reprinted from 1979 through 1982 only. ANS/Flashbacks were still years away and I don’t think the 86 albums reprinted anything for the first time from OS 1-16. Conversely the 82s did include several first-time reprints.
I don’t have the results on hand, but believe it or not, the most UNDER-represented series of them all is Series 9. Only about 10 or 11 reprinted if I remember correctly.