This item was from the Stillwell family estate of Lewis Buckley Stillwell 1863-1941 and his wife Mary Elizabeth Thurston & Agnes Newhall Stillwell 1906-1957 & Richard W Stillwell 1899-1982 who were well known professors at Princeton University, in fact several generations of the Stillwell family included many who lectured at Princeton. I recently acquired many fine items from the Stillwell family estate at Plymouth MA.