2798. The Book of Knowledge Vol. 1?20 Grolier 1957 + 1958?60 Annuals ? Complete Encyclopedia Set. 13 books. There is wear on the hard covers. Please look at the pictures. Always consider offers. This complete Grolier Book of Knowledge encyclopedia set includes Volumes 1?20 from 1957 along with three annuals from 1958, 1959, and 1960. Created as a comprehensive children?s encyclopedia, this vintage educational book set presents topics in science, history, literature, geography, and more, all written in a format designed to engage young readers. A perfect addition to any retro library, homeschool collection, or for collectors of Grolier encyclopedias and mid-century reference books, this set offers both educational value and nostalgic charm. Preserve the legacy of learning with this 1957 Grolier encyclopedia set and annual updates.