Marked Bricks: Numbers & Symbols
1 face brick
Gladding, McBean & Company
Lincoln, Placer County, CA
1919-1931
Courtesy of Doug Smith
1 3/4 firebrick
Gladding, McBean & Company and Interpace
Lincoln, Placer County, CA
1950s-1960s
Courtesy of George L. Kennedy
24 low-duty firebrick
St. Louis Fire Brick & Clay Company
Los Angeles, Los Angeles County, CA
1901-1930
Courtesy of Douglas S. McIntosh
115 wedge rotary kiln (KROMAG) chrome-magnesite firebrick
E.J. Lavino & Company
Newark, Alameda County, CA
1952-1971
6 x 12 x 4 1/2 (PINITE) medium-duty firebrick
Gladding, McBean & Company (1943-1962) and Interpace 1962-1982
Pittsburg, Contra Costa County, CA
1943-1982
1-ACORN firebrick
Pacific Clay Products, Inc.
Corona, Riverside County, or Los Angeles, Los Angeles County, CA
1921-1953
Courtesy of Ron Rose
DIABLO 1 wedge or arch superduty firebrick
Gladding, McBean & Company (1943-1962) and Interpace 1962-1982
Pittsburg, Contra Costa County, CA
1943-1982
Courtesy of Ron Rose
DIABLO 2 wedge or arch superduty firebrick
Gladding, McBean & Company (1943-1962) and Interpace 1962-1982
Pittsburg, Contra Costa County, CA
1943-1982
Courtesy of Ron Rose
9-78 STOCKTON FIRE firebrick
Stockton Fire Brick Company
Pittsburg, Contra Costa County, CA
1931-1943
Courtesy of Joe and Michelle Pedroni.
1923 common brick
City Brick Company
Los Angeles, Los Angeles County, CA
1923
Courtesy of David Garcia
1924 common brick
Simons Brick Company
Simons, Los Angeles County, CA
1924
Courtesy of George L. Kennedy
[BTT logo] common brick
San Jose Brick Company
San Jose, Santa Clara County, CA
1887-1927, brick shown was made probably about 1900
Courtesy of James Salata
[CBMA logo] common brick
Western Brick Company
Long Beach, Los Angeles County, CA
1925-1930
[CBMA logo] common brick
Los Angeles Brick Company
Plant No. 2 East Seventh Street Yard, Los Angeles, Los Angeles County, CA
1900-1929, brick shown was made in 1928
Courtesy of Michael Iwinski
[CBMA logo] L.A.B.Co. common brick
Los Angeles Brick Company
Plant No. 1, Chavez Ravine yard, Los Angeles, Los Angeles County, CA
1900-1924
Courtesy of George L. Kennedy
Round Dimple red pressed brick
Gladding, McBean & Company
Lincoln, Placer County, CA
1890-1909
Round Dimple buff pressed brick
Gladding, McBean & Company
Lincoln, Placer County, CA
1890-1909
LIVERMORE [star] firebrick
Livermore Fire Brick Works, W. S. Dickey Clay Manufacturing Company
Livermore, Alameda County, CA
1917-1926
[three star] intermediate-duty firebrick
Los Angeles Pressed Brick Company
Cleveland St. yard (1887-1916), Los Angeles, Los Angeles County, and Alberhill yard (1916-1926), Riverside County, CA
1898-1926
Courtesy of Ron Rose