- United States -- History -- Civil War, 1861-1865 -- Economic aspects -- Encyclopedias, Juvenile
- Human body -- Encyclopedias, Juvenile
- Mediterranean Region -- Civilization -- Encyclopedias, Juvenile
- Drug abuse -- Encyclopedias, Juvenile
- Life sciences -- Encyclopedias, Juvenile
- Insects -- Encyclopedias, Juvenile
- Discoveries in geography -- Biography -- Encyclopedias, Juvenile
- Monsters -- Encyclopedias, Juvenile
- Outer space -- Pictorial works -- Encyclopedias, Juvenile
- Mathematicians -- Encyclopedias, Juvenile
- Reptiles -- Encyclopedias, Juvenile
- Technology -- Encyclopedias, Juvenile
- Predatory animals -- Encyclopedias, Juvenile
- Cats -- Encyclopedias, Juvenile
- Mexico -- Encyclopedias, Juvenile
- Europe -- Description and travel -- Encyclopedias, Juvenile
- Aversion -- Miscellanea -- Encyclopedias, Juvenile
- History, Modern -- 17th century -- Encyclopedias, Juvenile
- Substance abuse -- Encyclopedias, Juvenile
- Mythology, Classical -- Encyclopedias, Juvenile
- United States -- History -- Revolution, 1775-1783 -- Encyclopedias, Juvenile
- History -- Encyclopedias, Juvenile
- Religions -- Encyclopedias, Juvenile
- Virtual pets -- Encyclopedias, Juvenile
- Marine animals -- Encyclopedias, Juvenile
- Curiosities and wonders -- Encyclopedias, Juvenile
- Plants -- Encyclopedias, Juvenile
- Sex instruction for teenagers -- Encyclopedias, Juvenile
- Europe -- Colonies -- America -- History -- Encyclopedias, Juvenile
- Ethnology -- Europe -- Encyclopedias, Juvenile
- Manners and customs -- Encyclopedias, Juvenile
- United States -- Economic conditions -- To 1865 -- Encyclopedias, Juvenile
- History, Modern -- 16th century -- Encyclopedias, Juvenile
- Superheroes -- Encyclopedias, Juvenile
- Astronautics + History -- Encyclopedias, Juvenile
- Explorers -- Biography -- Encyclopedias, Juvenile
- United States -- Ethnic relations -- Encyclopedias, Juvenile
- Machinery -- Encyclopedias, Juvenile
- United States -- Encyclopedias, Juvenile
- Olympics -- Encyclopedias, Juvenile
- Animals -- Polar regions -- Encyclopedias, Juvenile
- Human anatomy -- Encyclopedias, Juvenile
- Reconstruction (U.S. history, 1865-1877) -- Encyclopedias, Juvenile
- Discoveries in geography -- Encyclopedias, Juvenile
- United States -- History -- 1783-1815 -- Encyclopedias, Juvenile
- Monuments -- United States -- Encyclopedias, Juvenile
- Fear -- Encyclopedias, Juvenile
- Holocaust, Jewish (1939-1945) -- Encyclopedias, Juvenile
- National Football League -- Encyclopedias, Juvenile
- Transportation -- Encyclopedias, Juvenile