Truck Hoist and Sky
Traffic Operations division of the Transportation Department, City of Calgary, Alberta
Transportation
1957 December 19
http://archivescanada.accesstomemory.ca/truck-hoist-and-sky
is-ccg-city-129
http://archivescanada.accesstomemory.ca/city-of-calgary-corporate-records-archives
City of Calgary, Corporate Records, Archives
Alberta