Volume four of Colonial Records of the Upper Potomac includes over 500 surveys and land entries in the Upper Potomac region that were dated prior to 1757. Nearly 400 of the surveys have been platted and are shown on one of the 59 maps found in this volume. They cover a wide area in part or all of ten counties in three states including Allegany and Washington counties in Maryland; Morgan, Hampshire, Mineral, Tucker, Hardy, Grant and Pendleton counties of West Virginia; and Highland County in Virginia. In many cases the plats of these surveys will help determine where people lived and who their neighbors were, a valuable genealogical clue to possible marriages and relationships.