The Collaborative International Dictionary of English v.0.48:

Micmacs \Mic"macs\, n. pl.; sing. Micmac. (Ethnol.)
   A tribe of Indians inhabiting Nova Scotia and New Brunswick.
   [Written also Mikmaks.]
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Mikmaks \Mik"maks\, n.
   Same as Micmacs.
   [1913 Webster]