Seymour, Montana, 1920
He entered a farm and the police shot him, it's not about sport hunting.
The second was shot down in 1935 in Flint, Michigan: Even after being gutted, he weighed 82 pounds. Height 97.5 cm, nose-tail length 237.5 cm.
the story about the maximum size of wolves - here is part of the documentation from the University of Caen, prof. Moriceau, relating to the 100-pound female wolf shot down in Mayenne, France, in 1886.

#page/n1/mode/2up" target="_blank" rel="nofollow noopener">http://www.archive.org/stream/historyofmastiff00wynnrich#page/n1/mode/2up

We also have that book on here at MD for easier reading. Ivan H Plauchu  thank you for posting the specific link.

Kyrgyz Dobot: Revival of breed

Dogs in Argentin, begining of the XX Century

The first mention in Greece of the Indian dog 

Medelian Mastiff in Russia, begining of XX Century

According some records, were brough to Russia from Milan, Italy, the territory of the Cane Garouf