circular Chart of Knowledge by S. G. Bocholtz, Boston (Chart of Knowledge Co. of America). The second side of this volvelle (a �wheel chart� of paper construction with movable parts) is a map of the United States (with each state named) plus Canada, Mexi
short_title
circular Chart of Knowledge by S. G. Bocholtz, Boston (Chart of Knowledge Co. of America). The second side of this volvelle (a �wheel chart� of paper construction with movable parts) is a map of the United States (with each state named) plus Canada, Mexi
Short Title
false