- Annuals (Plants) -- Encyclopedias
- Minerals -- Encyclopedias
- Arthurian romances -- Encyclopedias
- Rome -- History -- Empire, 30 B.C.-476 A.D -- Encyclopedias
- Carle, Eric -- Encyclopedias
- Poland -- Social life and customs -- Encyclopedias
- Radio broadcasters -- Encyclopedias
- Medicinal plants -- Encyclopedias
- Manners and customs -- Encyclopedias
- Antiques -- Encyclopedias
- Arthur, King -- Encyclopedias
- Paleontology -- Encyclopedias
- Horses -- Encyclopedias
- Inventions + History -- Encyclopedias
- Materia medica, Vegetable -- Encyclopedias
- Dog breeds -- Encyclopedias
- Furniture -- Encyclopedias
- Emotions -- Encyclopedias
- Wrestlers -- Encyclopedias
- Locomotives -- North America -- Encyclopedias
- Scientists -- Biography -- Encyclopedias
- James Bond films -- Encyclopedias
- Folklore -- North America -- Encyclopedias
- World Wrestling Entertainment, Inc. -- Encyclopedias
- Civilization, Ancient -- Encyclopedias
- Ponies -- Encyclopedias
- Civilization, Classical -- Encyclopedias
- Indians of Mexico -- Encyclopedias
- Trees -- Encyclopedias
- Inventors -- Encyclopedias
- Technology + History -- Encyclopedias
- Black people -- Encyclopedias
- Animals -- Encyclopedias
- Great Britain -- Antiquities, Celtic -- Encyclopedias
- DC Comics, Inc. -- Encyclopedias
- Inventions -- Encyclopedias
- Earth sciences -- Encyclopedias
- Cats -- Encyclopedias
- Volcanoes -- Encyclopedias
- Astronomy -- Encyclopedias
- Self-care, Health -- Encyclopedias
- Ornamental shrubs -- Encyclopedias
- Tattooing -- Encyclopedias
- Fishing -- Encyclopedias
- Ornamental grasses -- Encyclopedias
- African diaspora -- Encyclopedias
- Wrestling -- Encyclopedias
- Mythology, Classical -- Encyclopedias
- Antiquities -- Encyclopedias
- Magic -- Encyclopedias