“See You in September” was written by Sid Wayne and Sherman Edwards. It was originally recorded by The Tempos out of Pittsburgh. This first version made it to No. 23 in the summer of 1959. The best known version was by The Happenings in 1966, reaching No. 3.
For no apparent reason there was also a doo-wop version by The Quotations released in 1962, which did nothing on the charts as far as I can tell, but it’s interesting in its own frenetic way.