This collection contains materials related to the trials of Louis Douglass, Willard Doughty, and Dan O’Connell for the murders of miners Jack Hayden and Hart. The materials largely consist of assorted documents acquired or produced in the process of the trials including warrants, subpoenas, witness interviews, interrogations, and letters. Photographs taken of the victims bodies, and the car used by the defendants are also included in this collection. This collection also contains a number of nitrate negatives of letters passed between the defendants while in custody. Due to the storage requirements of nitrate film, these negatives are stored separately in the conservation lab freezer at the Arizona Historical Society Museum in Tempe, Arizona.