BBC History: James Watt Scottish Engineering Hall of Fame – James Watt Revolutionary Players website Cornwall Record Office Boulton and Watt letters Significant Scots – James Watt "Chapter 8: The Record of the Steam Engine". history.rochester.edu.
BBC Histori: James Watt Skocezi Inxhinieri Hall of Fame – James Watt Revolucionare Lojtarët e internetit Cornwall Rekord Zyra Boulton dhe Watt letra E Rëndësishme Scots – James Watt "Chapter 8: The Record of the Steam Engine". history.rochester.edu.