What is associated with: between 1954 1980 the average weight of this annual selectee went from 132 pounds to 117?

What is associated with: between 1931 1970 millions learned to read using books featuring this brother sister their dog… What is associated with: between 1937 1942 he successfully defended his heavyweight title 21 times? What is associated with: between 1937 1950 this american boxer fought in 27 heavyweight title fights winning 26? What is associated with: between 1951 1977 this automotive foundation pumped about 290 million into public tv? What is associated with: between 1955 1982 a good polka was often on the program of this bandleaders wunnerful tv progr… What is associated with: between 1960 1975 madagascar was known as this republic? What is associated with: between 1960 1980 the population of this city went from under 150000 to more than 1000000? What is associated with: between 1960 1986 he racked up 44 top 40 hits but no no 1s?