This series contains Hayes other research work, small projects and correspondence about various artists, and includes material relating to:
-Barker, Thomas (1769-1847)
-Frost, George (1745-1821)
-Griffier, Robert (1675-after 1727)
-Haymen, Francis (1708-1776)
-Hogarth, William (1697-1764)
-Jackson, William (1843-1942)
-Houbraken, Arnold (1660-1719)
-Tull, Ebenezer (1733-1762)
-Wigstead, Henry (1745-1800)