It's interesting (frustrating?) how little information liner notes sometimes give about the early writers of some songs, like "Wild about my loving". I've got a recent Kweskin complitation from Vanguard that has the song on it. While they tell you that Geoff Muldaur sang the lead, they credit the song-writing to "Copyright control", whatever that is.
Kweskin does get joint writing credit on "My gal", along with Sebastian, Yanovsky, BooneButler, and Jacobsen (some of those names I recall from Loving Spoonful).