Brand name: STERLING
Company: Chicago Retort & Fire Brick Company.
Location: Chicago, IL.
Years: 1921-1942 (brick made)
Description: Brand name in a sinuous shallow frog, impressed into the face.
Comments: Likely shipped by rail from Chicago to San Francisco.
References: Gurcke, Karl, Bricks and Brickmaking, University of Idaho Press, 1987, p. 300.
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