– Evans Dual-purpose Streamlined Auto-Railers Detroit Michigan, 1930
– Erie Meter Systems, Modern Sales Equipment for Modern Stations, 1930
– C. Potter Jr. & Co. Manufacturers of Power Printing Presses and Steam Engines, 1877
These are awesome… I’ve always been a sucker for sketches and drawings especially technical ones! There’s some really cool design to be found on the website of the Smithsonian Institution!
All images are copyright Smithsonian Institution