The collection consists mainly of business correspondence between Joseph Cunningham and his clients. Some of the more recurrent of his business correspondents were Morris Printing Company, printers of the Swine Breeders Journal , J. B. Luyster, Lloyd Mugg, C.M. Dayton, C.S. William and Sons, and S. B. Wenger. The correspondence discusses the sale of Poland China Swine and Plymouth Rock Poultry eggs, including prices and pedigrees of the hogs. Some...