Roadway Industries truck, Edmonton, Alberta. 

Industrial machine, Alberta. 

Brass band, Industrial School, High River, Alberta. 

ATCO Industrial trailer, Calgary, Alberta. 

ATCO Industries factory, Airdrie, Alberta. 

Trailer built by ATCO Industries, Calgary, Alberta. 

Interior of ATCO Industries factory, Airdrie, Alberta. 

Interior of ATCO Industries factory, Airdrie, Alberta. 

Southern family and trailers built by ATCO Industries, Calgary, Alberta. 

Jerry Kiefer in his office at ATCO Industries factory, Airdrie, Alberta. 

Jerry Kiefer studying plans for house trailers in ATCO Industries factory, Airdrie, Alberta. 

Automobile pulling travel trailer rented from Trans-Canada Rent-a-Trailer, built by ATCO Industries, Calgary, Alberta. 

Agriculture and industry booth at Edmonton Exhibition, Edmonton, Alberta 

Truck in garage rented by Southern family to build trailers, Calgary, Alberta. 

ATCO trailers on lot, Calgary, Alberta. 

Photo of machine, W.H. Clark Sales, Edmonton, Alberta. 

A western Canadian coal mine in operation, western Canada. 

Power plant, Jasper Park Collieries, Pocahontas, Alberta. 

Car-top carrier of Alberta Trailer Hire, Calgary, Alberta. 

Donald Southern at dedication of ATCO Centenary Park, Calgary, Alberta. 

Donald Southern at Alberta Trailer Sales lot, Calgary, Alberta. 

Dedication of ATCO Centenary Park, Calgary, Alberta. 

Canadian Pittsburg Industries 

Canadian Pittsburg Industries 

Canadian Pittsburg Industries 

ATCO house trailers at dam site, Alberta. 

Machine making metal barrel-like containers, Calgary, Alberta. 

Canadian Pittsburg Industries 

Greenhill Wood Industries 

Interior of Canadian Pacific Railway Ogden shops, Calgary, Alberta. 

Girls sewing room, Industrial School, High River, Alberta. 

Early utility trailer built by Alberta Trailer Hire, Calgary, Alberta. 

Alberta Trailer Hire utility trailer for rent, Calgary, Alberta. 

[Strike squeezes construction industry.] 

Ron Southern with Alberta Trailer Hire rental trailer, Calgary, Alberta. 

Alberta Trailer Sales lot, Calgary, Alberta. 

Early utility trailer built by Alberta Trailer Hire, Calgary, Alberta. 

Joe Semotiuk and Bill Budnick, Edmonton, Alberta. 

Sewing book binding, Esdale Press, Edmonton, Alberta. 

Early trailer sold by Alberta Trailer Company, Calgary, Alberta. 

G.J. "Gerry" Maier - President and Chief Executive Officer of Bow Valley Industries 

Members of Western Retail Lumberman's Association, Calgary, Alberta. 

Western Retail Lumberman's golf tournament, Calgary, Alberta. 

Rumpus room clinic, Calgary, Alberta. 

Fire crew at Royal Canadian Air Force base, Pearce, Alberta. 

Northern Eau Claire Lumber and Building Supplies office, Calgary, Alberta. 

MacCosham Van Lines building, Calgary, Alberta. 

[A geophysical worker is hit by a survey rod as a truck drives by.] 

Portable bituminous sand mixing plant built for S. C. Ells, Edmonton, Alberta. 

Filter cellar, Lethbridge Brewing and Malting Company, Lethbridge, Alberta.