Abstract The Philip Fox papers, comprising one box, include correspondence, astronomical notes and calculations, notes and drafts of publications, and lists compiled by Fox of outstanding scientists.The general correspondence covers the years from 1904 to 1941. Of interest are the four letters written in 1909 urging the purchase of the Simon Newcomb Library for the Astronomy Department at Northwestern. The standard equinox correspondence records Fox's interest in 1915 in establishing such a...