One of the leading geographers of the first half of the twentieth century, Vernor C. Finch played a major role in reshaping the way spatial information is cataloged and used. A longtime professor at the University of Wisconsin, Finch is best remembered for two innovations. One was the widely-used dot map technique, first used in his 1917 book, Geography of World Agriculture, to show distributions of agricultural variables over a large geographic area. The other was known as the “”fractional code,”” which allowed for the collection of vast amounts of data for relatively small areas.