Charles Sumner; “A Smacking breeze has sprung up, and we shall part this company soon; and then for the Atlantic! Farewell then, my friends, my pursuits, my home, my country! Each bellying wave on its rough crest carries me away. The rocking vessel impedes my pen. And now, as my head begins slightly to reel, my imagination entertains the glorious prospects before me…

In December 2012 Allegheny County Pennsylvania announced that it would rename the 16th Street Bridge in Pittsburgh in honor of McCullough. " He started it as a book about the founding fathers and back-to-back presidents John Adams and Thomas Jefferson; but dropped Jefferson to focus on Adams. In 2003 the National Endowment for the Humanities selected McCullough for the Jefferson Lecture the U.

McCullough's two Pulitzer Prize-winning books Truman and John Adams have been adapted by HBO into a TV film and a mini-series respectively. McCullough's most recent history The Greater Journey (2011) is about Americans in Paris from the 1830s to the 1900s.