After politics, he continued to remain active in the various organizations he belonged to, such as the NAACP, Eagles, Elks, Kiwanis, Knights of Columbus, and Moose International.
Mortimer has an Eagles club, a carry-out restaurant, an auto junk yard, a grain elevator, a trailer park, and a campground.
Order of the British Empire | Order of Australia | Law & Order | Philadelphia Eagles | Order of the Bath | Order of St Michael and St George | Dominican Order | Royal Victorian Order | Law & Order: Special Victims Unit | Distinguished Service Order | Order of Canada | Order of the Garter | New Order | Eagles | Order of Saint Benedict | Order of Friars Minor Capuchin | Order of the Crown of Italy | order | Eagles (band) | Independent Order of Odd Fellows | Royal Guelphic Order | Law & Order: Criminal Intent | Order of St. Olav | Order of St. Gregory the Great | Venerable Order of Saint John | Order of the Star of India | Corinthian order | West Coast Eagles | Order of the Indian Empire | Order of the Rising Sun |
It was donated to the State of Texas in 1961 by the Fraternal Order of Eagles, a civic organization, with the support of Cecil B. DeMille, who had directed the film The Ten Commandments.