This is not in the CD version of the AT Sourcebook. So we have not been able to confirm or source this addition to the section 'Local Self Reliance' of the sourcebook.
A user appeared to have included this title and upon performing a Google search for '4 Wheel Band Saw', an article from the Popular Mechanics magazine (1948) was found. Please follow the link for further information and add to this page if you have further information. Click on the hyperlink below for a Google books free preview:
