The famous J.W. Pepper sousaphone, considered one of, if not the earliest sousaphone in existence is featured in a scholarly text by Paul Edmund Bierly entitled "The Incredible Band of John Philip Sousa." Published in 2006 by University of Illinois Press, the text details the times, staff, tours, and legacy of one of the most renowned bands in American music history. Included in the work is an extensive appendix listing the band's performance schedule, a staff roster, typical band programs, a play list of songs and a lengthy discography. This is an excellent resource for Sousa aficionado's and history buffs alike.
J.W. Pepper has an active interest in preserving the early history of the company through acquisition of instruments manufactured and sheet music published by J.W. Pepper & Son, Inc. In addition, the national headquarters in Paoli, PA houses many of the company's early publications, advertisements and historical documents of the late 19th and early 20th century.
J.W. PepperŪ, leading retailer of sheet music in the world, has been in business for 130 years, with 15 locations across the country including the corporate headquarters in Chester County, Pennsylvania.
Pepper history: http://www.jwpepper.com/sheet-music/services-since1876.jsp