From 1979: the first (of, surprisingly, only two) paperback based on the TV incarnation of BUCK ROGERS IN THE 25th CENTURY.
It's an adaptation of the show's feature-length pilot... which also doubles (with a few - ahem - tweaks as the feature film). As is often the case, it's based on an earlier draft of the script (and there's probably some author-embellishments as well) so doesn't match either of the screen versions.
It's interesting that Larson doesn't seem to have been able to blag himself a co-author credit on this one... a business deal he managed to make with Universal's marketing department for both BATTLESTAR and KNIGHT RIDER book series.
Apologies for the whopping great price sticker. It wasn't going to shift without damaging the cover so I decided to leave it in place.