"The Buck Stops Here"
It's called the "I have a dream" speech. The most famous quote is "We Shall overcome." Some consider "I have a dream" to be the most famous quote from that speech.
There is probably not one most famous quote, but a very popular one is "The days are just packed!"
Albert Einstein's most famous quote about understanding is: "The only source of knowledge is experience."
Arguably, the most famous character would be the titular Harry Potter.
His Most Famous Quote Is 'Innovation distinguishes between a leader and a Follower Thank you
The quote was "Eat, or be eaten"
His most famous quote is probably "to be or not to be"
Harry Potter is the most famous, absolutly ...
"Ladies and Gentlemen...I am not dead"
I'd have to say that his most famous quote, which he was remembered for was "A complete Though Bloody Victory".
If its an authentic signature and it checks out by an authority on historical signatures then yes, it most definitely increases the value.
Truman's home is located in Independence, Missouri