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- Description:
- Black and white photographic print mounted on fabric depicting the pre-heating end of a Jeffery Dewitt Kiln under construction at the Champion Porcelain Co. Dated Apr.-5-1919.
- Date Issued:
- 1919-01-01T00:00:00Z
- Data Provider:
- Detroit Historical Society
- Collection:
- Champion Spark Plug Co.
- Description:
- Black and white photographic print mounted on fabric depicting equipment in the Department #36 Process Laboratory at the Champion Spark Plug Co. Caption on verso reads, "General view of Process Laboratory where bodies can be put into production without interfering with factory production."
- Date Issued:
- 1922-01-01T00:00:00Z
- Data Provider:
- Detroit Historical Society
- Collection:
- Champion Spark Plug Co.
- Description:
- Black and white photographic print mounted on fabric depicting the inside of the cooling end of a Jeffery Dewitt Kiln under construction at the Champion Porcelain Co. Dated July 25-1919.
- Date Issued:
- 1919-01-01T00:00:00Z
- Data Provider:
- Detroit Historical Society
- Collection:
- Champion Spark Plug Co.
- Description:
- Black and white photographic print mounted on fabric depicting a Jeffery Dewitt Kiln under construction at the Champion Porcelain Co. Dated July 18 1919.
- Date Issued:
- 1919-01-01T00:00:00Z
- Data Provider:
- Detroit Historical Society
- Collection:
- Champion Spark Plug Co.
- Description:
- 64-page illustrated Jeffery-Dewitt Insulator Co. trade catalog. Contents include common causes of insulator failure, manufacturing methods and routine tests, suspension and strain insulators, post type insulators, and foreign installations.
- Date Issued:
- 1923-01-01T00:00:00Z
- Data Provider:
- Detroit Historical Society
- Collection:
- Champion Spark Plug Co.
