Arcticmohawk
The Quebec sources are inaccurate in regards to Kahnawake street names. Keep in mind, Kahnawake is a federal reserve.

Believe it or not, Google Maps now has the correct name on the more northerly of the two streets, which is East 157th Street. Years ago, someone brought the sign back as a souvenir of the Bronx from near Yankee Stadium, and they nailed it to a phone pole. The name stuck.

Google doesn't know the name of the second road, and regrettably, neither do I.