Britannica Junior Encyclopaedia

The Britannica Junior Encyclopaedia was a reference work specifically designed for elementary school children. It was first published in 1934 and was based on Weedon's Modern Encyclopedia. In 1963, it was renamed Britannica Junior Encyclopædia and was revised until 1983. A notable feature of this encyclopedia was its ready-reference index volume, which combined brief fact entries with indexing to longer, more general articles.1

The World Book Encyclopedia, another children's encyclopedia, was first published in 1917–18. It was described as "organized knowledge in story and picture" and was a success from its inception. It later included annual supplements and was even adapted into a Braille edition.1

Compton's Pictured Encyclopedia, first published in 1922, was a revolutionary work that introduced continuous revision and fostered cooperation with educational advisors. It later became Compton's Encyclopedia and Fact-Index and eventually evolved into a multimedia encyclopedia.1

The Young Children's Encyclopedia, published in 1970, was created for children just beginning to read and featured colorful illustrations with brief text.1