Arrangement
The materials are arranged into a single series: Series 1: Audio-Visual Recordings. The materials are further arranged by two subseries: Sub-series 1: 10" discs and Sub-series 2: 12" discs. The materials within each sub-series are arranged alphabetically by box by the name of the performing ensemble on side A of each disc.
Biographical Note
Karl T. Humble (1943-2009) played principal euphonium for the United States Marine Band and the National Concert Band of America in Washington, D.C. between c. 1950 and c. 1960. After retiring from the U.S. Marine Band he moved to Albuquerque, New Mexico, and wrote extensively about brass instrument design before Parkinson's disease hampered his career as a musician, educator, and writer. Throughout his career he compiled a large collection of historical sound recordings of American and European brass bands.
Sources:
Arthur Lehman, The Best Marine Band Soloists http://www.dwerden.com/eu-articles-lehman-BestSoloists.cfm