The following books are available on the Web via download, at the library or can be purchased at a local bookstore.
Taverns of Cumberland County, Merri Lou Scribner Schaumann
Cumberland County: An Architectural Survey. Nancy Van Dolsen
The Origin, Purpose, and Result of the Harrisburg Convention of 1788. A Study in Popular Government, Paul Leicester Ford
Pennsylvania & the Federal Constitution, John Back McMaster & Frederick D. Stone
History of Adams & Cumberland County, Warner, Beers & Company 1886