Reddit mentions of Blue Book of Gun Values

Get a new wife... I kid I kid.

Get the Blue Book of Gun Values.

I'd keep (in no particular order)

• Winchester Model 94, if it is a pre-1964; pre-64 guns can be very valuable!
  
• Winchester Model 61
  
• Springfield Krag
  
• Mauser Model 98
  
• Marlin West Point
  
• M-1 Carbine Military
  
• Colt 38 Official Police
  
• Colt 38 Police Positive Special
  
• S&W Model 102 Military Police
  
• Strum & Ruger LR Auto Pistol
  
  Definitely get the blue book, before you even consider selling them. Convince your wife to take a firearms safety course and basic shooting course with you. Then get a gun safe and keep them at home; don't have someone install the safe. Be sure your home owner's insurance will cover what you've got, most home owners insurance only covers $500 worth of guns, jewelry and other things.
  
  The stuff which you're not "allowed" to keep, you can sell on GunBroker.

Fjestad's Blue Book.

Keep in mind, these are national averages. The values are a bit higher than my local area but it can give you a ball park.