Buy 3, pay for 2 — use code TRIPLEUS at checkout. Diane Kelder | HamelynBuy 3: 50% off the 3rd with TRIPLEUS50 Diane Kelder is a prominent American art historian born in 1934. Her professional career combines academic research with her experience as a gallery owner. She is a renowned expert on Impressionism and 19th-century French painting. Her major work, dedicated to Stuart Davis, is a fundamental reference in her bibliography. Throughout her career, she has published more than thirty works dedicated to the study of art.