Locality data associated with the roughly 3000 specimens cataloged to date indicate that Peale's collection has its origins in over 24 countries and dependencies on six continents and that the North American component of the collection includes specimens from at least 10 states and the District of Columbia.

If one plots the approximate points of origin for specimens in Peale's collection on a map of the world, the coverage is quite impressive given the difficulties associated with travel and global transport of biological collections during the first half of the 19th Century.

Locations of origin of specimens in the Peale collection plotted on a map of the world

Astonishingly enough, Peale himself visited a large proportion of these collecting sites by the age of 43. This was due in large part to his participation in a series of major scientific expeditions, most notably the Wilkes Expedition (1838-1842).

Route of the Wilkes Expedition