[1] An old label on reverse reads William Theobald 1834. Theobald was a prominent member of the horseracing scene, and was owner of a stud farm. Not included in the William Theobald sale, Christie’s, London, 10 May 1851 (Lugt 20366).
[2] See M. Knoedler & Co. records, approximately 1848-1971, The Getty Research Institute, Los Angeles, Accession no. 2012.M.54, Series I.A. Paintings, 1872-1970, Paintings stockbook 8 (A1-A2680, January 1928 – November 1943, p. 118; Accessed: http://hdl.handle.net/10020/cifa2012m54
[3] See M. Knoedler & Co. records, Series I.C. London, 1894-1977, Paintings stockbook 5 (A1-A2005, January 1928 – May 1938; p. 6 (Section 2); Accessed: http://hdl.handle.net/10020/cifa2012m54