Ann McNulty owned two Walters accordions. As of Jan. 2014, neither one has been located. One has 11 keys in Bb per the receipt below; the other (2 photos at bottom)  has 10 keys & is unknown, could be F. If anyone reading this  knows the whereabouts of these instruments, please contact Ted McGraw at emcgraw@rochester.com or 585-545-4415, Thanks! I apologize for the poor quality of the photos - it’s all we had to work with.