- Aeronautics, Military -- Encyclopedias
- Folk musicians -- Ireland -- Encyclopedias
- Political parties -- Platforms -- History -- Encyclopedias
- Muslims -- Biography -- Encyclopedias
- Philippines -- History -- Philippine American War, 1899-1902 -- Encyclopedias
- Renaissance -- Encyclopedias
- Psychology + History -- Encyclopedias
- German literature -- Encyclopedias
- Intergroup relations -- Encyclopedias
- Science + History -- Encyclopedias
- Africa, North -- Encyclopedias
- Vikings -- Encyclopedias
- Councils and synods, Ecumenical -- Encyclopedias
- Gun control -- Encyclopedias
- Christian biography -- England -- Encyclopedias
- Manned space flight + History -- Encyclopedias
- Manners and customs -- Encyclopedias
- Minerals -- Encyclopedias
- History -- Encyclopedias
- Women athletes -- Encyclopedias
- Vampires -- Encyclopedias
- Clothing and dress + History -- Encyclopedias
- United States, Central Intelligence Agency -- Encyclopedias
- Authors, English -- 20th century -- Biography -- Encyclopedias
- Religious fanaticism -- Encyclopedias
- Cooking + History -- Encyclopedias
- Child psychology -- Encyclopedias
- Democracy -- Encyclopedias
- Quilts -- Encyclopedias
- Assassination + History -- 20th century -- Encyclopedias
- Lesbians -- Encyclopedias
- United States, Supreme Court -- Officials and employees -- Biography -- Encyclopedias
- Indians of Mexico -- Encyclopedias
- Theater + History -- 20th century -- Encyclopedias
- United States -- Armed Forces -- African Americans -- Encyclopedias
- Capital punishment -- Encyclopedias
- Authors, English -- 19th century -- Encyclopedias
- Gods -- Encyclopedias
- Holocaust, Jewish (1939-1945) -- Personal narratives -- Encyclopedias
- United States -- History -- 1933-1945 -- Encyclopedias
- United States, Congress -- Encyclopedias
- Baseball + Social aspects -- Encyclopedias
- African Americans + Social life and customs -- Encyclopedias
- Cyclones -- Encyclopedias
- Sports -- North America -- Encyclopedias
- Carnival glass + Collectors and collecting -- Encyclopedias
- Dwellings -- Encyclopedias
- Scientific apparatus and instruments + History -- Encyclopedias
- Louisiana Purchase -- Encyclopedias
- United States, Advisory Group on Electron Devices -- Care -- Encyclopedias