Does this seem like a decent rescue? What about this one?

I would contact the Boxer rescue first & if they can't take dog, they probably have other boxer rescue contacts that will. The boxer rescue is best choice since they have experience with getting deaf boxer as many of the white ones are or have other issues. Some of their fosters specialize in deaf/blind dogs. Good luck finding the dog at home - so many people want to buy that "rare" dog w/o doing their homework to realize all the health issues they have & good reasons that color is DQ.