In two of his publications, "Picture Rocks: American Indian Rock Art in the Northeast Woodlands", and "Amulets, Effigies, Fetishes, and Charms. Native American Artifacts and Spirit Stones from the Northeast", my friend and colleague, archaeologist Ed Lenik, of NJ, illustrates quite a few stone heads that are likely Native American in origin. Ed specializes in the study of rock art, petroglyphs, and pictographs found in Northeastern states.
It might also be worth noting, in view of the fact that smokeythecat mentioned the face masks of the Iroquois False Face Society, that quite a few carved granite heads, not included in Lenik's books, and showing no marks from metal tools, and weighing from as little as 2 1/2 pounds, to as much as 25 pounds, have been found in fairly recent years, at several locations in central Massachusetts. Most show mouths that really are remindful of the Iroquois false face masks, but, nobody really knows the origin of these rather mysterious stone heads.
Here are a few of these granitic stone heads from central Massachusetts. (The first one on the left below is from Maine. All the others were found in central Ma.)
The example on the left in the photo below, weighs 25 pounds:
Here's a nice one, maybe the best....
A somewhat different style stone head from Ma:
Check this out! A carved face on the bottom of a soapstone bowl, from Providence, RI:
