Contains correspondence and publications while at Bell Telephone Laboratories from 1916 to 1950 and correspondence connected with national societies relating to the physical sciences and acoustics from 1910 to 1954.

Contains oral histories, an autobiography, lab books, and certificates. Materials date from between approximately 1901 and 1980.

Contains copies of publications on acoustics and sound collected by Fletcher.

Contains personal and professional correspondence of Fletcher. Materials date from between approximately 1912 and 1980.

Contains speeches, correspondence, manuscripts, and other material by Fletcher.

Contains awards, certificates, speeches, articles, and other material related to Fletcher's association with Bell Telephone Laboratories. Dated from between 1916 and 1949.

Contains awards, certificates, letters, reports, and research related to Fletcher's career at Brigham Young University, including committee work and administrative service. Materials date from between 1952 and 1980.

Contains correspondence, certificates, and reports related to Harvey's association with Columbia University. Materials date from between 1949 and 1952.

Contains correspondence, reports, or other material related to the Armed Forces-National Research Council Committee on Hearing and Bio-Acoustics (CHABA) collected by Fletcher. Materials date from approximately 1952 and 1970.

Contains materials related to the National Academy of Sciences collected by Fletcher.