After some searching, here's what I can offer.
That smaller model is from the company on the box there. It is a DC-6B and the markings are peel and stick. The model itself is plastic, "snap tight" construction.
The larger model looks like the Revell DC-7. Those are the decals, although they are incomplete. The cheat stripe is missing.
That kit, in an unopened box, goes for good money, but the example here looks really poor.
I don't think you missed anything.