From the Birmingham Weekly Post Friday 15th May 1959:

ABC TV's "Oh Boy!" will introduce Terry White and his recording of 'Blackout' to TV audiences for the first time tomorrow week. Terry, who is 18, works on a weekly picture  story magazine where one of his jobs is to answer readers' letters. This occupation must have inspired the flip side to "Blackout" which is called "Rock Around The Mailbag" and was written by Terry himself.