As well as a portrait by Oswald Birley at the Huntington Library, portraits of Huntington were also painted by the Swiss-born American artist Adolfo Müller-Ury who built a studio less than a mile from Huntington's estate in San Marino in 1924-1925: a full-length, based on a photograph, is at the Collis Potter & Howard Edwards Huntington Memorial Hospital in Pasadena, and two seated versions, a small one of which was acquired by Huntington's son-in-law John Metcalf, and a larger one (which is presumed lost) which was engraved by an artist called Witherspoon in 1928. The artist also painted Huntington's granddaughter Mary Brockway Metcalf (this is on long-term loan to the offices of the Director of the Huntington Library and Art Gallery).