Which president started the tradition of pardoning the Thanksgiving turkey?

The tradition of “pardoning” White House turkeys has been traced to President Abraham Lincoln's 1863 clemency to a turkey recorded in an 1865 dispatch by White House reporter Noah Brooks, who noted, “a live turkey had been brought home for the Christmas dinner, but [Lincoln’s son Tad] interceded in behalf of its life. . . . [Tad’s] plea was admitted and the turkey’s life spared.”

Recently White House mythmakers have claimed that President Harry S. Truman began this amusing holiday tradition. However, Truman, when he received the turkeys, and subsequent presidents did not “pardon” their birds. The formalities of pardoning a turkey gelled by 1989, when President George H.W. Bush remarked, “Reprieve,” “keep him going,” or “pardon”: it’s all the same for the turkey, as long as he doesn’t end up on the president’s holiday table.