| Title | Letter from Charles Prosper Sainton (1861-1914), painter, tfrom 100 Colville Mansions, Powis Terrace, Bayswater, to Mrs Alder, wife of Henry Brooke Alder, 17 Harrington Gardens, Kensington, concerning holding art classes and recommending Calderon's School [William Frank Calderon's school of Animal Painting] at 54 Baker Street, St Marylebone |