The focus of the collection is on early American history and literature, and also includes rare maps and atlases, works on
ornithology and natural history, and early travel narratives. O'Hara Darlington also contributed his collections of
Victorian literature, sporting books, and works of illustrators and caricaturists.
Personal and business papers Darlington collected personal letters authored by General James O'Hara to his wife and contemporaries that describe the conditions of Fort Pitt in the 1790s. One of these includes a description of the colonists' interactions with the surrounding Native American tribes. Some papers document the business dealings of James O'Hara's land from 1785. General James O'Hara's diary is part of the collection and documents his opinions on immigration and glassworks that he built.
Atlases and maps that is part of the Darlington Digital Library Included in the collection are thirty-six rare maps, eight of which show various iterations of the world, including Gerhard Mercator's world view created in 1613. Some maps are large and unbound. Others are included in rare books. These maps were part of a June 12, 2015 exhibition at
Hillman Library conducted to commemorate the 200th anniversary of William Darlington's birth on May 1, 1815.
Lithographs Historical
lithographs illustrating buildings and people are part of the collection.
Art The ASC presented content from the Darlington collection that consisted of original Audubon prints on November 16, 2013. These were not reproductions but some of the original sized and printed editions by
John James Audubon. One of these has been an exhibition highlighting the ASC's holdings related to map makers and cartography. The collection houses some of the oldest maps known that document cartography in the New World. {{cite web ==References==