The Collaborative International Dictionary of English v.0.48:

Esquimau \Es"qui*mau\, n.; pl. Esquimaux. [F.]
   Same as Eskimo.
   [1913 Webster]

         It is . . . an error to suppose that where an Esquimau
         can live, a civilized man can live also. --McClintock.
   [1913 Webster]