Scope and Contents From the Collection: Papers, circa 1810s-1830s, of Gustavus Depp and Elmore Depp of Powhatan and Chesterfield Counties, Virginia. The collection includes two commonplace books and two ledgers.  The commonplace books are both collections of different principles and rules of higher mathematics including geometry, trigonometry, calculating interest, among others.  The commonplace book belonging to Gustavus Depp focuses much more heavily on geometry than the one owned by Elmore Depp.  Both books contain inscriptions...