Lever pouch padlock Postal Museum. Click to open image viewer. CC0 Usage Conditions Apply Click for more information. Click to view download files. Click to view IIIF info. This media is in the public ...

The advantages of gear-and-lever voting machine, c. 1898, over the ballot box were many, including that it kept a running count, thus speeding up the reporting of results. Hugh Talman, NMAH Editor ...