The Economy meter
Subtitle: an electric railway efficiency device
By: Economy Electric Devices Company
Publisher: The Company
Published: 1920
Place of publication: Chicago
Language: eng
Number of pages: 15
Other titles: Trade catalogues (NLC), Railroad; Catalogues commerciaux (BNC), chemin de fer
Notes: A corporate body and subject index for this collection, and other trade catalogues, is located in the National Archives Reading Room.