131 S.WSler &\ 





^^ Man«factuies?a»e])airs CompafsesCtuairanls Sextants 



8c Nautical .WPT 



^^^ ;ilfo EngraNTtig-*: Copperplate Printing'. ^__\^^=s."i 



Figure 22. — Trade cards of William Hamlin (1772-1869), engraver and instru- 

 ment maker of Providence, Rhode Island. In collection of Rhode Island 

 Historical Society, Providence. 



46 



