These links are either the sources of material or just great horology (alphabetically)...

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• Alexander has the largest collection of Soviet Watches YouTube Link. (all in Russian)

• Abbott. Henry G. The Watch Factories of America. 

• Arnold. Robert F. & Hernick. James L. Hampden Watch Co. 

• Canton history site http://www.ohiohistorycentral.org/w/Welcome_To_Ohio_History_Central

• Dueber Hampden in Canton http://www.zion-canton.org/centennial-history.pdf

• Dueber-Hampden Watches 1889, by Unknown. Broadcast April 3, 1949. Horological Library

• Engel. Joseph, Ex. Director. Canton Preservation Society.

• Gibbs. James W. http://www.amazon.co.uk/Springfield-Moscow-complete-Dueber-Hampden-story/dp/B00070ZNRS

• Hanson. Jon. http://www.americanhorologe.com/Mozart/Mozart.aspx

• Horrisberger. Lee. http://dueber-hampden.blogspot.com/

• James. Kevin. The Watch Guy. http://thewatchguy.homestead.com/pages/BENRUS.html

• Jansson. Maija. Shared Memory: John Hampden, New World and Old

• Kenney. Kimberly A. Canton: A Journey Through Time.

• McKinley Presidential Library & Museum. Canton, OH. USA. 

• Wein. Joe. Hampden Corporation

• Wilkie and Tager Hampden County

• Wirdnam. Paul. http://www.electric-watches.co.uk

• This is a specific link in the USSR-WATCH.COM site (see banner below). HERE you will find Soviet watch catalogs.

Links for Students

Here are two links, independently sent to me by students, about the history of time keeping. 

• Amelia's link

• Megan's link

 

Books in my collection

(alphabetically)...

• Arnold, Robert F. & Hernick, James L. Hampden Watch Co.

• Blair, Harry. Mr Horology - The Life & Times of Henry B. Fried.

• Gibbs, James W. From Springfield to Moscow.

• Harrold, Michael C. American Watchmaking. 

• Sterling, Ronald E. Canton, Ohio (Images of America).

• Watkins, Richard. Jacques David's American and Swiss Watchmaking in 1876.