Gruenberg, Benjamin C. (Benjamin Charles) 1875-1965 creator mixed material monographic eng 28,000 137 2 55.6 Correspondence, diaries, speeches, writings, notes, newspaper clippings, printed matter, and other papers. Open to research. Restrictions may apply to unprocessed material. Maps transferred to Library of Congress Geography and Map Division. Photographs transferred to Library of Congress Prints and Photographs Division. Benjamin C. Gruenberg, author and educator. Sidonie M. Gruenberg, author and child study specialist. Collection material in English. Finding aid available in the Library of Congress Manuscript Reading Room. Gruenberg, Sidonie Matsner, 1881-1974 mm 82024265 Open to research. Restrictions may apply to unprocessed material. DLC 821109 20260227111713.0 mm 82024265