Stuart Crump, Jr. is best known in the yo-yo community as "Professor Yo-Yo", the editor of "Yo-Yo Times" the longest running yo-yo periodical. Like many kids of the 1950s, Stu was introduced to yo-yos by a professional demonstrator. But he didn't meet the yo-yo man at a contest or school demonstration. On a family vacation to Charleston, SC, the Crumps had the good fortune to be staying four doors down from Joe Radovan, owner of the Royal Yo-Yo Company. The year was 1954, and every night found Stu and his brother watching in amazement as Radovan worked the yo-yo. Stu bought his first yo-yo at a corner store that summer: a three-jewel Royal that cost 20 cents. Radovan carved an island scene on it and encouraged the boys to learn the basic tricks.