"Certain peculiar earthworks near Andover, Massachusetts, Volumes 4-6", by Warren King Moorehead, is a 1908 bulletin. In addition to Bulletin V, this writing contains, in Bulletin IV, Part II on Fort Ancient in Ohio.
First, page 76 documents stones from Fort Ancient having been hauled away by farmers:
Second, page 152 contains the author's opinion on the effort it took to include stone in the construction of Fort Ancient.
Third, page 215 documents the early method of property boundary marking as blazing trees first, then erecting a stone wall.