Governor Brooks – petitions for pardon, Caldwell, Robert, https://drive.google.com/file/d/0B_YiJoTQNoYeNGE2Z2M3V1k5ODg/view?usp=drive_link&resourcekey=0-Rq6b3AO8EjWVhrMMm5yPJw. Wyoming State Archives, Wyoming Cultural Resources Division, Wyoming Department of State Parks & Cultural Resources.

Governor Brooks – petitions for pardon, Caldwell, Robert, https://drive.google.com/file/d/0B_YiJoTQNoYeNGE2Z2M3V1k5ODg/view?usp=drive_link&resourcekey=0-Rq6b3AO8EjWVhrMMm5yPJw. Wyoming State Archives, Wyoming Cultural Resources Division, Wyoming Department of State Parks & Cultural Resources. https://wyocomet.wyo.gov/repositories/2/digital_objects/3383 Accessed November 22, 2024.