First you need to ask them is if Buddy is territorial, or has ever acted aggressive towards other dogs in his yard.
If not, then I would take Major there, and have both dogs on leashes, and introduce them slowly to each other. Some dogs don't care who's dominate, they just want to play! But some dogs, want to figure out who's in charge first... then they'll get along. (or not)

If Buddy is territorial, then it would be best to let them meet somewhere on neutral ground. Like a dog park, then they can become friends, then you can try him out at Buddy's house.

I hope it works out!! I'm sure Major would have fun running around on a farm with a "Buddy"!!!

Let us know how it all goes!!

(How funny is it that for Thanksgiving I am going to be in Missouri too!!) But I'm going to be in the VERY South West corner of the state)