From the 1917 Official Automobile Blue Book:

Can you tell where they are mentioning 

something within Montague?

Hint:

"Tri-States, NY 4-corners" was likely the corner by the current Ford Dealer's, 

just past South Maple Ave.

Previously, that was the site of a mill and hence had a bridge crossing the stream.

The "fork beyond blacksmith shop" was within the Brick House Village area, just before where the road split - allowing one to head to Milford or to continue south and to the Hainesville section of Sandyston Township. 

There was a blacksmith's shop, that was located just beyond the current Foster-Armstrong House on River Rd.