Telescope scale model, being built at Warner & Swasey, Cleveland, shows factory machinery

Telescope scale model, being built at Warner & Swasey, Cleveland, shows factory machinery

Plaskett telescope, model, factory

A picture of the lower half of the 1/10th scale model of the telescope and dome that was built by Warner & Swasey. This is an excellent image of their workshop showing a series of lathes powered by leather belts all connecting back to the power source

Unknown

National Research Council Canada

ca.1915