This collection consists of a single copybook containing approximately 650 outgoing letters from P. S. & N. President John Byrne. Between September 1901 and February 1902, Byrne wrote to officers of mining and rail companies, and to officials within his own corporation. Byrne corresponded with the vice president of the Shawmut Mining Company, F. E. Cartwright, and Frederick D. Underwood, president of the Erie Railroad Company. The volume also included letters to Henry S. Hastings, Byrne's auditor and assistant treasurer. Also present are a series of letters to Congressman James Knox Polk Hall, in which Byrne negotiates the price of bank lands in Elk County, Pennsylvania. The letters are bound in chronological order, and the volume contains an alphabetized, handwritten index of correspondents.