Encyclopedias, Almanacs, Transcripts, and Maps
- Dubois, John
- Dubois, Louis Ernest
- Dubossary
- Dubourg, Louis William Valentine
- Dubrovno
- Dubuque, Archdiocese of
- Ducasse, Curt John
- Duchemin, M. Theresa Maxis, Mother
- Duchesne, Louis
- Duchesne, Rose Philippine, St.
- Duckesz, Eduard
- Duda, Virgil
- Duehring, Karl Eugen°
- Dueñas
- Duenner, Joseph Ẓevi Hirsch
- Dueren
- Dueren, Isaac ben Meir
- Duesseldorf
- Duffy, Francis Patrick
- Duffy, Mary C.