The Wyndham Robertson Collection contains five letters from 1846 to 1857 written by Robertson to John G. English. English appears to have acted as a business agent for Robertson for many years. Robertson's letters reveal interests in purchasing land in Mississippi and Alabama, hiring individuals to survey the land, and making solid investments. The letters written to English concern properties in these areas. In addition to the letters, the collection contains a promissory note written in 1874 by Robertson for the amount of $3,000 to be paid to George Palmer. The collection also contains a copy of The Historical Society of Washington County, Virginia, Bulletin from 1996 which features a detailed biography of Robertson.