IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. During the 1880s the engineer Herman ...

From the early 20th century into the 1970s, Americans used punched cards to enter data into tabulating equipment and then electronic computers. This is an early key-operated punch, based on patents of ...

Add Yahoo as a preferred source to see more of our stories on Google. The U.S. Constitution requires that a population count be conducted at the beginning of every decade. This census has always been ...

Cards like these were used widely to input and store data for specialised data processing equipment from about 1890 to about 2000 - they may still be in use on some large computers. This one was ...