On the original Law and Order, of whom are the portraits on Adam Schiff's office walls?

Bobby Kennedy.
https://web.archive.org/web/20090303235220/http://www.tv.com/law-and-order/show/180/trivia.html

Chessart -- thank you for your answer. I just don't see it. I know one of the portraits is of a young Abe Lincoln, but I haven't seen one with Bobby Kennedy. The portrait that particularly stumps me is very prominent in the scenes from Schiff's office. It is of a man, head bent, balding. I think it looks like Hubert Humphrey. Just a guess though. Thanks for your help. -- April Norman

I believe I've figured it out. I believe the portrait of the older gentleman, with eyes cast down, is Robert M. Morgenthau, the real District Attorney of New York County that Adam Schiff was loosely based on. Google his name and you'll see a picture of him. The picture I found was one of him at age 89(?), but you could see that portrait as him about 20 or 30 years younger.