Occasionally, Bulletin articles are prepared with supplemental material that cannot be published in the Bulletin due to space considerations. Bulletin readers are directed to this page to access this material in PDF format. See link below to download the latest Acrobat Reader.
"U. S. Government System of Observatory Time" is an Appendix to
“A Clock for Sending Time Signals” by Chester B. Watts Jr., which was published in the August 2008 NAWCC BULLETIN, p. 449.
"J. P. STEVENS Watchmaker, Inventor, & Clockmaker" by Katherine Kittle (GA, NY) appendices. The original article appeared in the August 2008 NAWCC BULLETIN, p. 387.
"United States Watch Company (Waltham, MA) History and Watch Production" by Andrew H. Dervan (MI) Appendix. The original article appeared in the October 2007 issue of the NAWCC BULLETIN.
"Things are Seldom What They Seem—Christiaan Huygens, the Pendulum, and the Cycloid" by Alan Emmerson (Australia) Appendix, Part 1. The article and Appendix B appeared in the June 2006 NAWCC BULLETIN.
"Things are Seldom What They Seem—Christiaan Huygens, the Pendulum, and the Cycloid" by Alan Emmerson (Australia) Appendix, Part 2. The article and Appendix B appeared in the June 2006 NAWCC BULLETIN.
“A Clock for Sending Time Signals” by Chester B. Watts Jr., which was published in the August 2008 NAWCC BULLETIN, p. 449.
"J. P. STEVENS Watchmaker, Inventor, & Clockmaker" by Katherine Kittle (GA, NY) appendices. The original article appeared in the August 2008 NAWCC BULLETIN, p. 387.
"United States Watch Company (Waltham, MA) History and Watch Production" by Andrew H. Dervan (MI) Appendix. The original article appeared in the October 2007 issue of the NAWCC BULLETIN.
"Things are Seldom What They Seem—Christiaan Huygens, the Pendulum, and the Cycloid" by Alan Emmerson (Australia) Appendix, Part 1. The article and Appendix B appeared in the June 2006 NAWCC BULLETIN.
"Things are Seldom What They Seem—Christiaan Huygens, the Pendulum, and the Cycloid" by Alan Emmerson (Australia) Appendix, Part 2. The article and Appendix B appeared in the June 2006 NAWCC BULLETIN.
"Impulsing the Pendulum: Escapement Error Appendix" by Dr. George Feinstein (NY). The origianl article appeared in the October 2006 Bulletin, p. 569.
"Provincial Clocks and Clockmakers: The Claytons of Marple, Seventeenth and Eighteenth Century Cheshire Clockmakers Appendices" by Dr. Simon R. Drachman (ENG). The original article appeared in the April 2006 BULLETIN, p. 174. Appendix A was printed with the article.
"Fundamental Principles of Tuning Fork Timepieces Appendix" by Rubens A. Sigelmann (WA). The original article appeared in the December 2005 Bulletin, p. 706.
