- Beatrice Winser: First female director
- Wilma Jackson Grey: First African American female director
- Mildred Lockett Lipscombe, Theresa Knight Moore, and Elitea Bulkley Allison: First three Black librarians
- Alma C Mitchill: Longterm at PSE&G
- Miriam Studley: Longterm director of NJ Room
- Julia Sabine: Longterm head of Art and Music.
- Ingrid Betancourt: Longterm head/founder of HRIC.
- Miriam Ogden Ball: Created subject headings for photos.
- Marian Manley, Sarah Ball and Linda H. Morley : Heads of the Business Branch.
- Kate Louise Roberts: Reference librarian known as “a walking encyclopedia”.
- Adelaide C. Kight: Business branch longterm librarian.
- Maude Johnson Greene: NJ Historical Society “Assistant Librarian” (d. 1963)
- Clara Whitehill Hunt: Many years in Children’s Room (d. 1958)
- Gertrude L Oellrich (d. 1974), cataloger spoke 13 languages
- Clara Kircher: Newark native, reading expert, many years in Children’s Room
- Catherine B Van Dyke (1891-1946) wrote several items on library history, head of Lending and Reference
- Marcelle Frebault (ret. 1957), head of Art and Music
- Margaret Griere (d. 1953), head of Roseville
- Florene Carlton: Doll collector and head of PSE&G library 43 years.
- Ann Borden: Head of Lending and Reference (ret. 1955)
- Marie Prevost (ret. 1948), Head of Cataloging
- Lillian Perron (d. 1972), Head of Branch Brook
- Mrs. R. L Rice (d. 1952), Head of Branches
- Ruth Littig, in charge of Weston Collection (Science)