Jefferys was born in Hillsboro. He was educated in the Hillsboro public schools before going to work for the Missouri, Kansas and Texas Railway Company, evidently in Dallas, where he served variously as a roadmaster’s clerk, secretary to the chief engineer, and secretary to the general manager until 1918. He began painting in 1923 and was largely self-taught save for a brief period of study under Frederick Jarvis in New York. In 1936 Jefferys moved from Dallas to Tyler and in 1942 began a career as a journalist working for the Tyler Morning Telegraph, Tyler Courier-Times, and the Courier-Times-Telegraph until 1969, writing feature articles and shorter columns under the pen name Arthur Bishop. He evidently stopped painting in 1941. Jefferys died in a Tyler hospital and was buried in the city. Jeffery’s landscapes appeared in 1926 issues of Holland’s and Literary Digest. His painting of Charles Lindbergh’s Spirit of St. Louis, executed in 1927, was autographed by Lindbergh and reportedly sold for $2,000 at a New York City auction. His paintings of Eddie Rickenbacker, World War I ace, and Amelia Earhart, first woman flyer to cross the Atlantic, were also autographed by the subjects and resulted in a financial gain for Jefferys.