The Hewitt mercury vapor lamp
By: Cooper Hewitt Electric Co
Publisher: Cooper Hewitt Electric Co.
Published: 1903
Place of publication: New York
Language: eng
Number of pages: 28
Subjects: Catalogs; Electric lamp industry; Mercury vapor Electric lighting; Electric lighting; Equipment and supplies; Cooper Hewitt Electric Co
Notes: Printer's statement on t.p. verso: The Winthrop Press, 32-34 Lafayette Place, New York.

Westinghouse Companies Publishing Department device on p. 28.