To Miss Frances Herbert, for information about the Carlyle, Herbert and Fairfax families, and for the photograph of John Carlyle's mother, Rachel Carlyle.
To the late Mrs. Charles R. Hooff, for loan of the Carlyle genealogy and for permission to photograph John Carlyle's snuffbox.
To Mrs. William Boothe, for Lee family notes and Christ Church anecdotes.
To Mrs. Charles Baird, and her sister, Mrs. Gerhard Dieke, for permission to quote from the books of their father, the late Fairfax Harrison, and from the books of their late grandmother, Mrs. Burton Harrison; for photographs of Sally Gary, George William Fairfax and Ben Dulany.
To Mr. Taylor Burke, for the anecdote of the purchase money for Mount Vernon.
To Judge Walter T. McCarthy, for permission to open court-sealed deed books.
To the late clerk and assistant clerk of the Fairfax Court House, Messrs. F.W. Richardson and Alton R. Holbrook, and to the present clerk, Mr. Thomas P. Chapman Jr., for documents, photostats and unfailing patience and courtesy.
To the attendants of the manuscript division, the map room and the rare book room of the Library of Congress.
To the attendants of the Virginia state archives in Richmond, for assistance in uncovering Alexandria records.
To the ladies at the Alexandria library.