IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. By the 1960s most adding machines on ...
This printing electric adding machine has a gray plastic case, a block of ten number keys, TOTAL, SUB-(/)TOTAL, -, and X keys to the right of the number keys, and two larger keys, one at each side of ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results