Meade estimates Lee had 100,000 at Gettysburg:
Question: I will askat Gettysburg you, in this connexion, about the comparative strength of the two armies at the battle of Gettysburg. What was your opinion about that?
Meade: My opinion about that was that General Lee was, as far as I could tell, about 10,000 or 15,000 my superior.
Question: What was your strength upon that battle-field?
Meade: Including all arms of the service, my strength was a little under 100,000 men—about 95,000. I think General Lee had about 90,000 infantry, from 4,000 to 5,000 artillery, and about 10,000 cavalry.
(from senate testimony March 1864)