Governor William Richards petitions for pardon – Walker, Joe, https://drive.google.com/file/d/0B_YiJoTQNoYeOEpIWWVwb3JZcm8/view?usp=drive_link&resourcekey=0-pvaaYraFdxW_sP7G1SPU8A. Wyoming State Archives, Wyoming Cultural Resources Division, Wyoming Department of State Parks & Cultural Resources.

Governor William Richards petitions for pardon – Walker, Joe, https://drive.google.com/file/d/0B_YiJoTQNoYeOEpIWWVwb3JZcm8/view?usp=drive_link&resourcekey=0-pvaaYraFdxW_sP7G1SPU8A. Wyoming State Archives, Wyoming Cultural Resources Division, Wyoming Department of State Parks & Cultural Resources. https://wyocomet.wyo.gov/repositories/2/digital_objects/2899 Accessed November 05, 2024.