Welcome to Boxerworld.
I understand your grieving as I had my 13 yr old put down Nov 1st. What a trooper to the bitter end. Still so fiesty for seniors.
I am also from Western NY (Buffalo area). I am new to it, but am involved in showing my new babies, and have met and become friends with several of the breeders in our area. As the others have suggested, check the breeder page link provided here for breeders that health test, etc.
You could check with the Boxer Club of WNY also. I am not a member, but am friends with many of them. Perhaps they can assist you also. Yesturday, their page link was not working properly, but keep trying.
There are a few dog shows coming up in our area and it would be a great idea to go to them and see what dogs you like and meet the breeders. Its best to wait till their done showing for the day though, when theres more time to talk and answer your questions.
Myself and a couple other BW members will be at these shows.
Private message me if you'd like more details and I'll try to help.
Again, sorry for your loss- treasure the memories and focus on the great fun and laughs you had.
Jill