Supplement 10 "The Priceless Possession of a Few – A brief History of the Gruen Watch Company, their 50th Anniversary Watch and Contemporary Prestige Watches"

Supplement 11 "William Claggett and his Clockmaking Family"

Supplement 12 "The Welch, Spring and Company"

Supplement 13 "Heman Clark and the ‘Salem Bridge’ Shelf Clocks"

Supplement 16 "Aaron Dodd Craine – An American Original"