Papers contain both personal papers and administrative records. Personal papers include Slonaker family genealogical materials, correspondence, mementos, photo albums, and wedding anniversary keepsakes. Administrative records and other materials related to the Slonaker School in San Jose, Boys Brotherhood, HESA, Boys City and Sons in Retirement.

Harry E. Slonaker was born in Hammond, Indiana, in 1903, and later became active in the Chicago Boys' Brotherhood Republic (BBR). The BBR attempted to teach boys leadership and responsibility through self-governance in recreational and civic activities. Slonaker was mayor of the BBR of northwest Chicago, and was asked by founder Jack Robbins to start a chapter in New York City. At the time, Slonaker had opened his own firm as a fur trade manufacturers' rep and was traveling back and forth to New York on a regular basis. In January 1932, the first meeting of the New York BBR took place at 282 East 3rd Street, with Slonaker as the first supervisor. He remained active in the New York BBR, headquartered at 290 East 3rd Street, until 1940, when George Ougourlian succeeded him as supervisor. Slonaker also traveled to California in 1937 to establish BBR branches in Modesto and Stockton.

5.0 Cubic feet (4 boxes)

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The collection is open to the public for research by appointment.