This collection consists of ca. 2988 items (10 Hollinger boxes and oversize items), ca. 1787-1945, pertaining chiefly to the career of Egbert Watson Magruder as an agricultural chemist for the Department of Agriculture of Virginia and, later, for the F. S. Royster Guano Company of Norfolk, Virginia . Included are correspondence, reports, articles and speeches, laboratory data, architectural drawings and blueprints, printed material, and photographs. Egbert Watson Magruder collected material, 18981945, on various subjects related to the different aspects of his work, including agriculture, chemistry, chemists' associations, fertilizer, horticulture, livestock, and mineralogy. Also included are Magruder family papers, consisting of correspondence, legal and business papers, plats and surveys, and related papers. Topics or items of interest include several letters,1861-1863, from John Bowie Magruder during his service in the Confederate Army during the Civil War describing several battles, including Fredericksburg and Suffolk, and camp life at Fort Dillard, Fort Drury (near Fredericksburg), and on White Marsh Road near Suffolk; an 1861 account book kept by John Bowie Magruder for the Rivanna Guards; a letter, October 17, 1864, to Benjamin Henry Magruder from his son, Horatio Erskine Magruder while a prisoner at Point Lookout, Maryland, during the war; papers pertaining to the purchase of "Glenmore"; papers concerning various Virginia estates such as "Edgehill" and "Glenmore" in Albemarle County, "Blenheim" in Caroline County, "Union Mills" in Fluvanna County, and "River Bend" in Spotsylvania County; an account book from the Charlottesville Grange; and genealogical and biographical information for the Magruder family and allied families.