Hello Gentlemen,
I'm Philippe, from Belgium.
An old (as in 89) friend recently gave me some stamp albums he collected 50y ago, asking me if I could be bothered to look up if there's any value in them.
One of them is a very nicely made (I enjoyed reading it, though I'm not into stamps, at least that I know of :-) ) history of the US.
Some of the stamps are quite old, looking them on stampworld, I got the impression some of them might have some value to collectors.
But I thought I might defer to the collective knowledge of a forum such as this to get a better idea.
So here are some that seemed worth asking about :
Hamilton 30c (1888 ?)

Lincoln 6c

Lincoln 15c

Franklin $1

Various Franklin


(there are some more, but those are the oldest in the album)
Thank you for your time !
---
edit: bleh, the images are not showing, I suppose because I'm too new here ?
The links should be working, sorry about that.