IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. This full-keyboard printing adding ...

The Burroughs Adding Machine can still be purchased today from sites like eBay, usually for between $70 and $300, or more depending on the condition of the machine. At one point the Burroughs Adding ...

This full-keyboard manually operated printing adding machine has seven columns of color-coded number keys, with nine keys in each column. To the left of these are three rows of black keys with a key ...