The naming policy on the sleeve and labels have varied over the years:
1935 - Boston "Pops" Orchestra - with "Pops" in quotes
1949 - Boston Pops Orchestra - quotes are dropped from this year. Dominant sleeve name 1949-1960, 1978-2005.
1952 - Boston Pops - Used infrequently 1952-1959. Becomes the dominant sleeve name from 1960-1978 and again 2005-2023, due to reissues. Note that labels still usually credit the full name Boston Pops Orchestra throughout the era.