2 Old US Covers, Any Value?

Hi all,
Since I don't collect covers I figured I would ask ya'll if these were of any interest or value. I would not have the first clue. Thanks for your help as always and hope you enjoy!

YES! They are very very nice pieces of postal history and would be welcome in most everyone's cover collection! I believe you have 2 scott #10's or 11's cant really tell which or what type from your pictures but I'm sure someone can at least get you in the ball-park. I LOVE to see the classics still on cover! You probably know this already but it needs to be said: please don't ever remove them as it will both devalue and lose all it's history.

ILS, thanks for your kind works and good news. These are really neat even though I don't collect covers.

Maybe you can start?

The Monroe cover looks to be a Scott 11. But do I see a pre-print paper fold? There appears to be a thin "white" line from George's left shoulder down to the "N" of "CENTS".

These are beautiful - classic stamps, clear cancels, and lovely penmanship!

The Wisconsin one will be of more value from purely the perspective of the cancel.