6CHAPTER IV HENRY MAUDSLAY
18CHAPTER XVI THE BROWN & SHARPE MANUFACTURING COMPANY
7CHAPTER V INVENTORS OF THE PLANER
19CHAPTER XVII CENTRAL NEW ENGLAND
8CHAPTER VI GEARING AND MILLWORK
20CHAPTER XVIII THE NAUGATUCK VALLEY
9CHAPTER VII FAIRBAIRN AND BODMER
21CHAPTER XIX PHILADELPHIA
10CHAPTER VIII JAMES NASMYTH
22CHAPTER XX THE WESTERN TOOL BUILDERS
11CHAPTER IX WHITWORTH
23APPENDIX B THE JENNINGS GUN
12CHAPTER X EARLY AMERICAN MECHANICS
24A PARTIAL BIBLIOGRAPHY ON TOOL BUILDING