The first published history of Loudoun was written by Yardley Taylor, a Quaker of the upper country, prior to 1853 in which year it made its printed appearance. With it was published a map of the County prepared by him (for his vocation was that of a land-surveyor) and both map and book are highly creditable to their author. The book, however, is not very large and, concerning itself somewhat extensively with the topography, geology, etc. of the County, it has less to say of Loudoun's history than its admirers could wish. The map, embellished with cartouches of old buildings, was the first county map to be prepared in this part of Virginia and so accurate was it found to be that it was used by both Federals and Confederates in the devastating War Between the States. That war, with its aftermath, set back the cultural activities of Virginia for a full generation; thus it was not until 1909 that the next Loudoun history appears, this time by Mr. James W. Head of Leesburg. His volume is more comprehensive than Mr. Taylor's but, again, it covers far more than the County's history, including carefully prepared surveys of its minerals, soils, farm statistics, commercial activities, and many other interesting and closely related subjects. In 1926 Messrs. Patrick A. Deck and Henry Heaton published their _Economic and Social Survey of Loudoun County_ which is somewhat similar in its scope to the work of Mr. Head but not so large a volume. In the meanwhile, however, in 1924, Mr. Fairfax Harrison, himself a scion of the Fairfax family, had privately published his comprehensive _Landmarks of Old Prince William_ covering the early history of all the territory originally comprised in old Prince William County; and thereby built an enduring monument to his own erudition and industry that will stand as long as there remains a man or woman who retains an interest in the fairest part of the princely Colepeper-Fairfax Proprietary. It remains a pleasant and grateful memory that I had the benefit of Mr. Harrison's personal suggestions and advice, as well as access to the overflowing treasury of his published writings, in my preparation of this volume.