During the 1870s, G. V. Nash actively compiled and published county maps. In 1873, he assisted E. M. Harney compile maps of Racine, Kenosha and Winnebago counties. Harney published a wall map of Manitowoc County in 1872. Nash collaborated with others on maps of Washington and Ozaukee (1874), Juneau and Portage (1876) and Pierce (1878) counties. Nash & Morgan’s Sectional Map of Wisconsin was published in 1878.