Among the correspondents in this folder are: Paul Luckey of the Circus World Museum, Harold B. Bachman (several letters in this folder), Allen Ostrander, Frank Falcome (concerning his father, Mario), Elden C. Bailey (concerning Bridges' article about H.A. Vander Cook), Norman E. Hinkel, William J. "Bill" Marshall, Guy F. Foreman (concerning Bridges' article on H.A. Vander Cook ), Irving Levin (2 letters concerning technical aspects of recording), carbon copy of Bridges' letter to a Mr. Stuart (concerning Stuart's Sousa discography), Paul E. Bierley, Arthur W. Lehman, James Smart of the Library of Congress regarding some rare recordings of the 1890s and 1900s, letter from Bridges to Ray Wise, with Wise's reply written on the Bridges' letter, Bill Schuler, Kenny Trimble, and an undated draft of Bridges' bio of T. V. Short (perhaps of June, 1970). There is a design for an administrative study of American Baptists in Michigan, prepared in January of 1970. There is also the registration for the Bridges' car, dated February 12, 1970.