Produced by Lenny Waronker (as on label; credited as Leonard Waronker on back cover)
Engineering Supervised by Lee Herschberg
Stereo & Monaural Compositions by Bruce Botnick
Sound Effects by Jack Glaser & El Supremo
Musical Adviser & Conductor: Kirby Johnson
You may be right that that's original, as {Image #3375275} has the 'WB' shield - but {Images #1233740 & 3375274} have the newer 'W7' logo signifying the change to Warner Bros.-Seven Arts. Also, {Image #3375275} has "Leonard" Waronker's name in an older font, which looks like Venus Medium, and the credits in Venus Light and Medium; {Images #1233740 & 3375274} have all set in Helvetica - and also, more important, a 1968 copyright date for the music publishing.
I’ve added two more liner variations. One is a slight modification of the existing one; it has a 5 along the lower left edge. The other is a drastic revision which omits the lyrics, and instead has liner notes and complete musician credits. Because the cursive font across it matches the font on the cover, I suspect that this may have been the original version. If so, this album had the same kind of revision as Randy Newman’s first LP: a liner with full credits was replaced by one with the artist’s critically-acclaimed lyrics.