Benjamin Rush (Philadelphia) letter to Dr. [David] Hosack (n. p.), 1812 September 25 1 Leaves Box 2, Folder 4 Bookmark Abstract Or Scope Rush's copy of a letter to Hosack on the origin of the fortifications and other Native ruins in different parts of the country. view more view less Collection Context David M. Rubenstein Rare Book and Manuscript Library Benjamin and Julia Stockton Rush papers, bulk 1766-1845 and undatedLetters, 1777-1824