![Derrick Used to Build Dredge, c1941.](http://dawsonmuseum.ca/cdn/shop/products/2001.2.88_{width}x.jpg?v=1616621901)
Black and white photo of two men hanging from derrick.
Inscription verso: This is the derrick used in building the dredge this summer. Its 115 feet high. Two men having a joy ride. I took one during a noon hour and got quite a thrill and also a few pictures #4 1941?.