Sectional and Geological Map of Iowa

Fine example of the first commercially published geological map of Iowa.

This large map of Iowa was compiled by Nathan Parker in Clinton, Iowa while he was part of the firm Parker, Dole & Co. This firm included land agents and real estate speculators during Iowa’s initial period of settlement in the mid-19th century. Parker, gathering information from public and private sources (the U.S. Geologic Survey wouldn’t be founded until 1879), put together this map to induce settlement (and therefore, profits) to the state. As part of the draw, he elected to include the numerous rail lines already constructed and under construction throughout the state, as well as an inset map that highlights how well-connected Iowa is to its eastern neighbors.

Unlike later geologic maps, the information on this image is of practical use to most potential settlers, and shows areas rich for mining in coal, lead, iron and plaster. Topographical detail, especially marshes, is also especially helpful when determining homestead locations. A fascinating early map of Iowa engraved and printed by the famous firm of J.H. Colton in Chicago.