Governor Joseph M. Carey – Petitions for Pardon, Bertol, Frank, https://drive.google.com/file/d/0B_YiJoTQNoYeakR2SmFZV0dHeUk/view?usp=drive_link&resourcekey=0-Efn903i5dYFkm1t-T1JfyA. Wyoming State Archives, Wyoming Cultural Resources Division, Wyoming Department of State Parks & Cultural Resources.

Governor Joseph M. Carey – Petitions for Pardon, Bertol, Frank, https://drive.google.com/file/d/0B_YiJoTQNoYeakR2SmFZV0dHeUk/view?usp=drive_link&resourcekey=0-Efn903i5dYFkm1t-T1JfyA. Wyoming State Archives, Wyoming Cultural Resources Division, Wyoming Department of State Parks & Cultural Resources. https://wyocomet.wyo.gov/repositories/2/digital_objects/4584 Accessed November 14, 2024.