WLS also produced the weekly Silver Dollar Survey from October 14, 1960, to December 22, 1967, broken by the Silver Beatle Survey on February 21, 1964 (see picture to the right) and the Super Summer Survey from May 5, 1967, to August 25, 1967. The survey nominally contained 40 current listings, except for occasional weeks when it contained less current listings, usually 20, plus a special listing of greatest oldies. From 18 September 1964 through 25 December 1964, the survey consisted of the top 30 pop hits, followed by the top 10 R&B hits. Thereafter, the survey changed its name numerous times (89 WLS Hit Parade, 89 WLS Chicagoland Hit Parade, WLS Musicradio 89, etc.). Starting with the July 20, 1970 survey, the number of listings dropped from 40 to 30, then varying from 25 to 40 starting June 26, 1972, then dropping to 15 by March 9, 1974, then increasing to a high of 45 by the end of 1975. No "take home" surveys were printed from March 13, 1972, through July 16, 1973 (these were limited to one poster-size weekly survey displayed at record shops). The year-end listing was the 20 greatest hits of the year for each year from 1963 through 1966, increased to 89 from 1967 onward.