To everyone involved in the Dryden Surname Study, I have the following reference books and will be glad to look up information for you.
The Dryden Family and Descendants, Book I and Book II, by Leslie Powell Dryden, Ruth Dryden.
Book 1 details: Descendants of William and Agnes Dryden of Somerset County, Maryland USA, circa 1685-1990, by Leslie Powell Dryden. Includes early Parish records from 17th century Scotland. Index of Drydens included in book are in the preview.
Book 2 details: Descendants of David Dryden of Rockbridge, Virginia USA, circa 1700-1990, by Leslie Powell Dryden. Index of Drydens included in book are in the preview. Softcover, 318 pages, 1993.
The best I can do under copyright law is lookups. If you wish to purchase the books, you can buy them at Lulus Publishing. Or, Leslie Drydens research papers and documents are located at Salisbury College. He willed them to them after his passing.