Contents:
U DEN2/1 Fragmentary letters, 1948-1950
U DEN2/2-36 Letters from Hetta Empson to Walter Brown, 1952-1957
U DEN2/37-62 Letters from Hetta Empson to Walter Brown, 1968-1996
U DEN2/63-77 Letters from Walter Brown to Hetta Empson, 1950-1953
U DEN2/78-98 Miscellaneous, 1948-1979