Much of the material in this series seems to have been compiled in regard to the investigation by the Washington, DC, Board of Public Welfare and the hearing that followed. This series contains prison administrative records comprised of memos; reports, and correspondence, especially between Gill and the Superintendent of the District Jail, Claude O. Botkin, and the director of the Board of Public Welfare, Ray L. Huff; notes; photographs; and building... plans.

While the majority of this series contains materials created during Gill's tenure as Superintendent of District Prisons, studies conducted in Washington D.C. on inmate industrial good behavior time earnings and the District's correctional program at an earlier date are also included. A large portion of this series consists of clippings related to the DC Jail hearing beginning with the prison escapes and ending with Gill’s unsuccessful appeal. This series also contains hearing materials, including reports made by the board of inquiry appointed by the commissioners of the District of Columbia, a full transcript of the hearing, and Gill’s notes and correspondence regarding the possibility of appeal. Included in this series are also materials related to the defense of Gill by the public, most notably by the Citizens Committee on District Prisons, a prison reform organization with which Gill was affiliated.