12019-03-12T23:56:32+00:00Stanford University Pressaf84c3e11fe030c51c61bbd190fa82a3a1a1282414plainpublished2019-10-09T19:07:53+00:00Production Editor7a3dce28be212b1ba5b4a7a50f3d6a8d76b58c74On January 5, 1957, the New York Amsterdam News featured an advertisement for the radio show of deejay “Jocko” Henderson, “your ace from outer space.” Henderson was an important early R&B and rock ’n’ roll deejay who hosted a radio show, Jocko’s Rocket Ship Show, that broadcast in New York and Philadelphia.