From the time of early settlement in Virginia, water-powered mills played a primary role in the state's economy. This work provides an overview of grain milling in Floyd County, Virginia, from 1770 to the present day. Topics covered include the difficulties involved in identifying early mills, the importance of mill site selection, water wheel types, laws regulating mills, the decline of milling and physical remains of abandoned mill sites.

The main body of the book provides individual histories of 140 grist, flour, and feed mills, a few of which also processed wool. The histories are based primarily on oral histories, title deed records, and local newspapers. More than 100 photographs and maps supplement the text, and tables provide production figures for various mills from industrial censuses of 1850, 1870, and 1880.