With July 4th right around the corner, we’ve got a quartet of radio mysteries involving great figures and moments of American history. Henry Fonda recreates his role of Young Mr. Lincoln in a radio version of the classic film on Academy Award (originally aired on CBS on July 10, 1946). Honest Abe is a lawyer who must clear his wrongfully accused clients of murder. Lee Bowman plays Allan Pinkterton, one of America’s most celebrated detectives, as he investigates a case of robbery and murder in “The Pinkerton Man” from The Cavalcade of America (originally aired on NBC on November 18, 1946). A recently released convict falls in with a gang that forges correspondence from historical figures in “Letters from Aaron Burr” from The Whistler (originally aired on CBS on November 20, 1949). And “the man with the action-packed expense account” hunts for a stolen original copy of the Gettysburg Address. Bob Bailey stars as Yours Truly, Johnny Dollar in “The Meek Memorial Matter” (AFRS rebroadcast from March 3, 1957).