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It would seem easier for me to peel the mint stamp off of the USPS booklet and place it on another section of similar paper which I can then trim to fit in a mount in my album.
I have not personally tried this for collecting purposes, but when I remove a self adhesive stamp from its backing and place it in another position on the same backing paper, the stamp is not very secure. It's good enough for keeping a stamp until you're ready to use it for postage, but I don't think it would be satisfactory enough to keep for long term storage as would be needed for a stamp collection.
I think you'd be better off to remove the stamps around the one you desire to keep for a collection and remount them on a backing paper for postage use; thereby keeping the self adhesive stamp you isolate for your collection in perfect condition.