The grist mills of Lancaster County, Pennsylvania were once the hubs of their local communities. People came to the local mill not only to get their corn and wheat ground, but also to catch up on the local news. In many cases, the mill served as the local post office. At one time there was a mill for every 2 1⁄2 square miles. Now there are less than one hundred still standing. This book serves as a record of those mills, relating some of the stories of the men and women who worked the mills. Organized by watershed, the book contains the full catalog of mills past and present with details and timelines. As poet, Sarah Doudney wrote, "The mill will never, never grind with the water that is past." Yet, we can look back and see the role that those old mills played in the history of the county. The book begins with a description of water-powered milling in general, and describes the machinery that was employed in the process before electricity became readily available. The next section provides a narrative description of each of the mills that still exist in some form including those sites where a covered bridge that was associated with a mill still exists even though the mill is gone. The last section contains a catalog of all of the Lancaster County mill sites with the details that are known about each mill. The details include the latitude/longitude coordinates of each of the sites. Both the narrative section and the catalog are organized by watershed. Finally, there is an index of names where, if you know the name of a miller, you can look them up to see which mill they owned and when they were the owner. Donald Kautz grew up, and still lives, in Lancaster County, Pennsylvania. He is a retired software developer and amateur photographer who loves to photograph and dive into the rich history of the county. He previously wrote a book entitled,  The Conestoga River: A History , published by the History Press.