I'm not sure - it does look like Rockwell's style, but I always think of his work as drawings, or paintings, not photographs. I found the picture of the baby inside the old man's hands on a 'free' Christian website, but it was on a purple background. I like the flag behind them better, and of course added the text. :)
That makes sense, hands are very difficult to draw.
As for your image source, what do you think they would think if we sent it back? (I wouldn't want you to get in trouble for "borrowing" it!)