For the Fall 2021 semester, due to COVID, the Special Collections reading rooms in Firestone and Mudd Libraries are open to members of the Princeton Community who have access to campus buildings. The Access Services page has information for all researchers on how to gain physical or virtual access to the collections. At this time, the Cotsen Children's Library Bookscape Gallery continues to be closed. Visit the Cotsen Children's Library website for more information on access to these collections.
For a listing of some of his books in the General Rare Book Collection (Ex) see pp. 401-403 (section on O'Neill) in Merle Johnson's American First Editions (4th ed.) New York, 1942 [(ExB) 04703.501.22]
Research Tools for Printed Material (Books, Maps, Prints, etc.)