That Treeline design, known as the carpenter's hatchet, has been around for nearly 100yrs and vintage examples can be found with minimal effort. Dozens of companies made them including Vaughn(back when they made a good tool), Winchester, Plumb(back when they made good tools as well), True Temper, Kelly, etc. The original pieces were forged from quality solid steel stock and hung correctly on a handle having the grain run inline with the strike plane to prevent delaminating along the growth rings. I find originals all over the place at antique shops and flea markets in the $30-$40 range. Great condition as well; not run on a grinder or chipped so bad they resemble a saw rather than a hatchet. Another option is the Estwing hatchet as Hilldweller mentioned. USA-made, one piece steel construction, super sharp, and about $40 brand new with a sheath. I have the Estwing Camp Hatchet and use it for woodworking; carving canoe paddles, bowls, spoons, etc. My woodsrunning tool is a Norlund HB pattern head hung on a framing hammer handle.
