
Compton's Pictured Encyclopedia Yearbook, 1966, 1967, 1973 though 1980 (HC),

WORLD BOOK ENCYCLOPEDIA Yearbooks*Choice of 1971,72,73,74,75,76,77,78,79,80,81,82,83,84,85,88,89,90,91,92,93,94,95,96,97,98,2000 thru 2009,

The 1980 World book year book : the annual supplement to the World book encyclopedia : Childcraft International,Inc. : Free Download, Borrow, and Streaming : Internet Archive,

The Encyclopaedia Britannica : a dictionary of arts, sciences, literature and general information : Chisholm, Hugh, 1866- : Free Download, Borrow, and Streaming : Internet Archive,

New Age encyclopedia book 1 through 20 set 1971