- 1718 Land Title Building,
Philadelphia, PA (1906-1909) [factory?]
- 134 North 10th Street. (1910-1914)
- 327 North 11th Street. (1915-1923?)
- 1914: La Porte, Indiana. Eastern office and second factory in New
York, branch offices and warehouses in Philadelphia and Chicago.
- 1900 CD (Philadelphia City Directory):
Charles H. Paschall (C. H. Paschall & Co.),
1118 North 40th Street
C. H. Paschall & Co. (Chas. H. Paschall) brokers,
1210 Market Street
- 1905 CD: Charles H. Paschall, salesman,
home 4913 Warrington Avenue
- 1909-1909 CD: American Three Way Prism Company,
134 North 10th Street. Charles H. Paschall, President;
Charles H. Hudnut, Secretary; L. Beatrice Paschall, Treasurer.
- 1910 CD: American Three Way Prism Company,
134 North 10th Street
- 1914 "F. A. Flocken is assistant manager of the American 3 Way
Prism Company, which is moving its offices and factory from Chicago
to La Porte, Ind. His address will be La Porte after April 1st."
--Cornell Alumni News, Vol. XVI, No. 20, February 19, 1914
- 1915-1921 CD: American Three Way Prism Company,
327 North 11th Street
- Jan 1, 1920: Merged with Luxfer forming American 3-Way Luxfer Company.
- So why is it still listed in the 1923 CD: American Three Way Prism Company,
327 North 11th Street; Chas H. Paschall, President (home Chicago);
C. P. Mills Vice President; J. J. Ohles, Treasurer.
The American 3-Way Prism Company was Luxfer's main competitor of
the time. They eventually bought out Luxfer in 1920 and became
American 3-Way Luxfer Prism Co.