This database is a response to an very generous gift of a map collection by Robert M. Campbell in 2001. This collection is particularly strong in maps of England, London, New England and inland navigation. It was decided at that time that cataloging of individual maps would consume too much cataloging resources to be feasible. This was an obvious first choice for an image database beginning in 2009 and initially focused on maps that had no other means of access. Eventually, the database will be expanded to included selected maps from books.