Includes:
-two letters from Major H.E.J.Spearman, dated 1 & 6 September 1953, concerning biographical information about Mytens and a portrait of Hugo Grotius
-photograph of one of the rooms at Knole showing a painting by Mytens on the wall
-letter from Edgar C.V. Oldofredi, dated 22 April 1949, concerning a painting entitled 'Queen Henrietta Maria and the dwarf Sir Jeffrey Hudson'