Hydro progress in Ontario, 1906-1956
Subtitle: 1956 marks the 50th anniversary of the Hydro-Electric Power Commission of Ontario : a half century of service to the people
By: Ontario Hydro.
Publisher: Ontario Hydro
Published: 1955
Place of publication: [Toronto]
Language: eng
Number of pages: 47
Subjects: Electric utilities -- Ontario -- History
Notes: Cover title.

Chart of the Ontario Hydro Organization, May 1956, inserted.