Bernie Knee recorded the demo but the first professional recording came in 1960 when The Four Voices (Frank Posta, Allan Chase, Bill McBride and Sal Mayo) were the first to record "Sealed With a Kiss" (Peter Udell - Gary Geld). The group were winners on Arthur Godfrey's Talent Scouts.
Brian Hyland covered the song in 1962 and reached the top five. It may be interesting to note that Brian's cousin was Larry Fine of the Three Stooges. Despite his start with the novelty song of the decade his career was really solid.
Drummer Gary (son of Jerry) Lewis and the Playboys (Allan Ramsay, David Walker, John West and David Costell) version reached the top twenty in 1968. Note that in 1956 Gary was voted the Cash Box male vocalist of the year. Thanks you to master producer Snuff Garret.
Originally known as "a young man with a big band", the Polish Prince, Bobby Vinton's issue of "Sealed With a Kiss" hit the top twenty in 1972.