H80-16/039 Wilking Collection, Triangle Service Station Ground Floor Plan, Casper, WY, https://drive.google.com/file/d/0BwGs7_2V6bvEVFcwV0RtTmdHaGc/view?usp=drive_link&resourcekey=0-sg3vCwjHuv4noVYWGAkeDg. Wyoming State Archives, Wyoming Cultural Resources Division, Wyoming Department of State Parks & Cultural Resources.

H80-16/039 Wilking Collection, Triangle Service Station Ground Floor Plan, Casper, WY, https://drive.google.com/file/d/0BwGs7_2V6bvEVFcwV0RtTmdHaGc/view?usp=drive_link&resourcekey=0-sg3vCwjHuv4noVYWGAkeDg. Wyoming State Archives, Wyoming Cultural Resources Division, Wyoming Department of State Parks & Cultural Resources. https://wyocomet.wyo.gov/repositories/2/digital_objects/4339 Accessed November 06, 2024.