The Grace Armstrong Coile Collection of Robert Armstrong Papers, 1790-1970, contains approximately 9,580 items. The collection includes newspaper clippings, land records, warrants, genealogical materials, correspondence, diaries, scrapbooks, survey notes and plats, maps, pictures, and publications such as magazines, almanacs, religious tracts, and memoirs. The bulk of the collection consists of four types of records: survey notes and plats, legal documents, genealogical materials, and correspondence. Several of the men in the Armstrong family were surveyors, several serving as the Knox County surveyor. Many of the notes and plats from these surveys can be found in the collection. Also included are many copies of land entries that were made in Knox County, and needed by a surveyor in order to survey the land. It should be noted that there are four folders of notes from surveys made by Robert III of Cherokee Indian lands. There are also notes and surveys concerning a proposed new county, which would have been known as Powell County, tentatively located near Washington, Sullivan, and Greene Counties. These survey notes and plats comprise the years from 1810 to 1880.