Authors:
Howard H. Aiken (1900-1973) & Grace Hopper (1906-1992)
Harvard's Mark I, the first digital computer, put in service. Officially known as the "IBM Automatic Sequence Controlled Calculator'' (ASCC), the Mark I was 50 feet long and weighed about 5 tons.
Geographic correlation diagram, showing the bivariate relation between two spatially referenced variables using vectors to represent geographic covariation
An initial, modern suggestion of a method for viewing a large database by the use of selective focus around a central region, using distortion to provide a context.
Visibiltiy Base Map, a map of the United States where areas are adjusted to provide a readily readable platform for area symbols for smaller states, such as Delaware and Rhode Island, with compensating reductions in the size of larger states