Yes indeed, no malice intended, just trying to set the record straight (if you’ll pardon the pun). The book First Hits by Brian Henson & Colin Morgan covers sheet music sales from 1946 to 1959. Sheet music charts were published in the press from 1937 to 1965 (with gaps in the war). After 1965, the Music Publishers’ Association continued to compile the charts until the early 1980s.

I wonder what your specialist subject on Mastermind was, Mike.