I guarantee you the middle one is not a Springfield. It's not even a US military weapon.
And the muzzleloader probably has little value given its condition and the fact it is missing a lock. If the barrel and stock are in good shape someone may restore it, but that and wall hanging are its only uses. It may not even be old, judging from the shine on the barrel. It very well could be an import replica from the 60's or 70's.
thats not a springfield....looks like an Arisaka with a bolt cover. you might have a couple hundred total for all 3 firearms.
the muzzle loader looks like one of those kit guns that no one finished and the barrel is rusted...youd be lucky to get $20 for that one.
Yup, what RelicHound said. I'd say the shotgun is worth the most (that's not saying much, though). The bolt gun has a straight bolt which automatically makes it non-US military. I'm not sure what it is.