OK, so I called the local radio stations to report the "found" dog and puppy. Then I called the shelter to see if anyone reported missing dog or puppy. The guy said he heard the black and white boxer on the radio, someone was missing it! So, I called back, they found the sheet, but the person did not leave a phone number. The boxer is no longer at the neighbor's house, so either he went home, or his owners found him. He was evidently spotted about 3 miles from where he was with my neighbors, just last week! So, this boxer is a wandering fool. Guess it's just coincidence they both showed up within 1.5 miles of each other same day. I'm still hoping someone will come forward. I was hoping the boxer was still around so I could have brought him here to see if the pup recognized him. But, the person looking for the boxer did not mention a pup, so probably they were not together, unless the pup started to tag along. I called another place called E.A.R.S. (Effingham Animal Rescue Sanctuary) and got answering machine. They never called me back, but I heard that they will help with the cost of neutering the pup if I get to keep him. He's becoming a challenge to me.
When I got home, he had gotten out of the pen (guess I forgot to latch the outside gate), but he was still around. That made me feel good that he felt comfortable enough to stay around! Again, my dogs coaxed him into the garage, and he almost came right into the house, just a slight hesitation tonight. Still laying next to my recliner, under the end table. It will be slow progress every day, but so far it's still progress.
Oh, and my brother in law said to name him "Yukon", since I have "Denali" and they are both models of vehicles (among other things) and if he is possible part Akita, that would work.
So, that's what I will call him, if I keep him.