File Speeches (?), undated Box 3 In: David E. Mattern papers, 1905-1972 (majority within 1930-1959) » Professional Career
File Mattern's "Cookbook" Box 3 In: David E. Mattern papers, 1905-1972 (majority within 1930-1959) » Professional Career
File Michigan School Band and Orchestra Association 2 folders Box 3 In: David E. Mattern papers, 1905-1972 (majority within 1930-1959) » Professional Career
File U of M Symphony Orchestra, 1930-1933 Box 3 In: David E. Mattern papers, 1905-1972 (majority within 1930-1959) » Professional Career
File U of M Men's Glee Club In: David E. Mattern papers, 1905-1972 (majority within 1930-1959) » Professional Career
File Programs Box 3 In: David E. Mattern papers, 1905-1972 (majority within 1930-1959) » Professional Career » U of M Men's Glee Club
File Clippings and Publicity Box 3 In: David E. Mattern papers, 1905-1972 (majority within 1930-1959) » Professional Career » U of M Men's Glee Club
File Business Box 4 In: David E. Mattern papers, 1905-1972 (majority within 1930-1959) » Professional Career » U of M Men's Glee Club
File Miscellaneous Box 4 In: David E. Mattern papers, 1905-1972 (majority within 1930-1959) » Professional Career » U of M Men's Glee Club
File Soldiers' Letters 2 folders Box 4 In: David E. Mattern papers, 1905-1972 (majority within 1930-1959) » Professional Career » U of M Men's Glee Club