"Among my most valued possessions is a tiny Col-
clesser tomahawk, of 8-ounce head and 2^ inch
bitt, which, with hickory handle and home-made
sheath, weighs only three-quarters of a pound. I
seldom go anywhere in the woods (unless in march-
ing order with a heavier axe) without this little trick. It is all that is needed to put up a satisfactory shelter wherever there is hemlock or balsam, or bark that will peel, while for other service I use it oftener than I do my jackknife." Horace Kephart, Camping and Woodcraft, vol. 2, p32.
The Colclesser company is long gone, but in searching for it found this review of light hatchets:
He seems to like the Vaughn hatchet better than Granfors, especially after skilled sharpening.
The Vaughn 1/2 lb head hatchet seems to be the winner, 11-12 oz, $22.69:
I just ordered one, $34.33 with shipping. I probably won't ever take it hiking, but I've always wanted one of Kephart's tomahawks.