LCCN 30012591: Willison, J. Sir George Parkin, 1929 (hdg.: Parkin, George Robert, Sir, 1846-1922)
LAC, Nov. 14, 2006 (hdg.: Parkin, George R. (George Robert),1846-1922; usage: George R. Parkin, Geo. R. Parkin, Dr. Parkin, Geo. Parkin, Dr. G.R. Parkin)
Round the Empire, 1893: t.p. (George R. Parkin)
WWW 1916-1928 (Sir George Robert Parkin, born 8th Feb 1846, died 25th June 1922)