McClellan congratulates Meade on his Gettysburg victory

Harry at Bull Runnings recently posted the text of a brief congratulatory note from Lee to Joe Johnston regarding the latter's big win at Manassas. It immediately reminded me of a passage from a recent book (unfortunately, I can't recall which one) that excerpted a gracious post-Gettysburg message from George McClellan to George Meade on the occasion of his former subordinate's great victory fought a week earlier. I was interested in reading the letter in full and easily found it after a quick online search through the O.R. Here it is: