There's a similar thing in Marath's Vineyard, an island south of Massachusetts: https://en.wikipedia.org/wiki/Martha%27s_Vineyard_Sign_Language https://en.wikip

There's a similar thing in Marath's Vineyard, an island south of Massachusetts: https://en.wikipedia.org/wiki/Martha%27s_Vineyard_Sign_Language https://en.wikipedia.org/wiki/Martha%27s_Vineyard_Sign_Langu... In this case, it's a unique sign language because Martha's Vineyard used to have a large population of deaf people.