Portrait of Dietrich Gruen, n.d.

Portrait of Dietrich Gruen, n.d.

Dietrich Gruen

(1847-1911)

Bibliographies

  • Fuller, Eugene T. The Priceless Possession of A Few. Bulletin Supplement of the National Association of Watch and Clock Collectors. 10 (1974).
  • Gruen, Frederick G. Historical Facts about the Development of Gruen Watchmakers Guild. </em>In<em> Buckeye Horology.. Edited by James W. Gibbs, 83-91. Columbia, PA: The Art Crafters, 1971.
  • Gruen, Robert Dietrich. A Brief History of the Gruen Watch Company. . Indianapolis: KenRo Printing Company, 1991.