John Quincy Adams, 1844, George Caleb Bingham’s historically most important portrait, is going up for auction on December 6, 2015, at Grogan & Company. Adams recorded his sittings with two artists who shared a studio in the Capitol in Washington, D.C.: George Caleb Bingham and John Cranch (1807-1891), Adams’ great-nephew, in his diary for May 23 and May 27, 1844. May 23 was rather uneventful, …