Warheit worked at: Librarian, Allison Library– a division of General Motors (1941-1946); Chief, library section, technical information, Atomic Energy Commission (1946-1952); also worked for IBM. He completed a pioneering study on the cost of a book.

A comprehensive biographical sketch, by Gordon Randall, appears in the Supplement to the Dictionary of American Library Biography, Vol.1, pp. 151-153