Marked Bricks: P-Q

P common brick
Pleasanton Brick Company
Pleasanton, Alameda County, CA
after 1877-1882?

PACIFIC firebrick
N. Clark & Sons
Sacramento, Sacramento County, CA
1872-1887
Courtesy of David Gettner

PACIFIC firebrick
N. Clark & Sons
Alameda, Alameda County, CA
after 1896?-1937
Courtesy of Stuart Guedon

PACIFIC face brick
Pacific Clay Products, Inc.
Los Angeles, Los Angeles, CA
1921-1953
Courtesy of Roy Steege

PACIFIC ACORN firebrick
Pacific Clay Products, Inc.
Los Angeles, Los Angeles, CA
1921-1953
![PACIFIC CLAY BLDG. PROD. [bricks] commercial brick](https://i0.wp.com/californiabricks.com/wp-content/uploads/2021/10/brick.pcbp_-432x164.jpg?fit=432%2C164&ssl=1)
PACIFIC CLAY BLDG. PROD. [bricks] commercial brick
Pacific Clay Building Products
Santa Fe Springs, Los Angeles County, CA
early 1980s

PACIFIC CLAY M’F’G. CO. firebrick
Pacific Clay Manufacturing Company
Corona, Riverside County, CA
1889-1910
Courtesy of M. Scott Fajack

Pacific Clay PRODUCTS INC. split paver
Pacific Clay Products, Inc.
Alberhill, Riverside County, CA
1996-P
Courtesy of George L. Kennedy

PACIFIC EXCELSIOR firebrick
Pacific Clay Products, Inc.
Los Angeles, Los Angeles, or Corona, Riverside County, CA
1921-1953
Courtesy of Alex Loulis

PACIFIC PYTHON firebrick
Pacific Clay Products, Inc.
Los Angeles, Los Angeles County, or Corona, Riverside County, CA
1921-1953
Courtesy of Blacky Blackwell

P. B. Co. common brick
Pomona Brick Company
Pomona, Los Angeles County, CA
1922-1941+
Courtesy of George L. Kennedy

PBY Co common brick
Park Brick Yard Company
San Diego, San Diego County, CA
1885-1888
Courtesy of George L. Kennedy

PCMCO firebrick
Pacific Clay Manufacturing Company
Corona, Riverside County, CA
1889-1910
Courtesy of George L. Kennedy

P.C.M.Co. CORONA, CAL. firebrick
Pacific Clay Manufacturing Company
Corona, Riverside County, CA
1889-1910

PCMCO GAS firebrick
Pacific Clay Manufacturing Company
Corona, Riverside County, CA
1889-1910
Courtesy of Ron Rose

PCMCO GAS firebrick
Pacific Clay Manufacturing Company
Corona, Riverside County, CA
1889-1910
Courtesy of Ron Rose

PCMCO SPECIAL firebrick
Pacific Clay Manufacturing Company
Corona, Riverside County, CA
1889-1910
Courtesy of Ron Rose

PCP face brick
Pacific Clay Products, Inc.
Los Angeles, Los Angeles County, CA
1921-1953

PCP ACORN firebrick
Pacific Clay Products, Inc.
Los Angeles, Los Angeles County, or Corona, Riverside County, CA
1921-1953
Courtesy of Douglas S. McIntosh

PCP EXCELSIOR firebrick
Pacific Clay Products, Inc.
Los Angeles, Los Angeles County, or Corona, Riverside County, CA
1921-1953
Courtesy of Roy Steege

PCP LADLE firebrick
Pacific Clay Products, Inc.
Los Angeles, Los Angeles County, or Corona, Riverside County, CA
1921-1953

PCP P 2 key firebrick
Pacific Clay Products, Inc.
Los Angeles, Los Angeles County, or Corona, Riverside County, CA
1921-1953
Courtesy of Steve Curtiss

P.C.W. red pressed brick
Vallejo Brick & Tile Company, Pacific Clay Works
Vallejo, Solano County, CA
1908-1909

PINITE 2 wedge or arch medium-duty firebrick
Gladding, McBean & Company (1943-1962) and Interpace 1962-1982
Pittsburg, Contra Costa County, CA
1943-1982

PINITE 102-114 SM medium-duty firebrick
Gladding, McBean & Company (1943-1962) and Interpace 1962-1982
Pittsburg, Contra Costa County, CA
1943-1982
Courtesy of Ron George

PISGAH common brick
Dr. Finis E. Yoakum and members of the Pentecostal Christian community
Pisgah Grande, Los Angeles County, CA
1914-1915
Courtesy of Ron Rose

PK pressed brick
Petersen-Kartschoke Brick Company
San Jose, Santa Clara County, CA
1884-1925
Courtesy of Alan J. Miller

PKBCO pressed brick
Petersen-Kartschoke Brick Company
San Jose, Santa Clara County, CA
1884-1925

PLACER firebrick
Gladding, McBean & Company
Lincoln, Placer County, CA
1921-1935

PLUTO firebrick
Steiger Terra Cotta & Pottery Company
South San Francisco, San Mateo County, CA
1905-1917

PLUTO-2 firebrick
Steiger Terra Cotta & Pottery Company
South San Francisco, San Mateo County, CA
1905-1917

PLUTO 3 firebrick
Steiger Terra Cotta & Pottery Company
South San Francisco, San Mateo County, CA
1905-1917

PREMIER firebrick
Livermore Fire Brick Works, W. S. Dickey Clay Manufacturing Company
Livermore, Alameda County, CA
1917-1926

PREMIER LIVERMORE firebrick
Livermore Fire Brick Works, W. S. Dickey Clay Manufacturing Company
Livermore, Alameda County, CA
1917-1926

PREMIER LIVERMORE F.B. WKS. S.F. firebrick
Livermore Fire Brick Works, W. S. Dickey Clay Manufacturing Company
Livermore, Alameda County, CA
1917-1926

PSP face brick
Pacific Sewer Pipe Company
Los Angeles, Los Angeles County, CA
1911-1921
Courtesy of George L. Kennedy

PSP ACORN firebrick
Pacific Sewer Pipe Company
Los Angeles, Los Angeles County, CA
1911-1921
Courtesy of George L. Kennedy

PSP EXCELSIOR firebrick
Pacific Sewer Pipe Company
Los Angeles, Los Angeles County, CA
1911-1921

PSP HIGH GRADE firebrick
Pacific Sewer Pipe Company
Los Angeles, Los Angeles County, CA
1911-1921
Courtesy of Albert Sanders

PSP 12 R firebrick
Pacific Sewer Pipe Company
Los Angeles, Los Angeles County, CA
1911-1921
Courtesy of Blacky Blackwell

PSP 18 R firebrick
Pacific Sewer Pipe Company
Los Angeles, Los Angeles County, CA
1911-1921
Courtesy of Jerry Doty

PSP 24 R firebrick
Pacific Sewer Pipe Company
Los Angeles, Los Angeles County, CA
1911-1921
Courtesy of Ron Rose
![PSP [acorn] firebrick](https://i0.wp.com/californiabricks.com/wp-content/uploads/2021/10/brick.pspacorn-432x218.jpg?fit=432%2C218&ssl=1)
PSP [acorn] firebrick
Pacific Sewer Pipe Company
Los Angeles, Los Angeles County, CA
1911-1921
Courtesy of George L. Kennedy

PSP [acorn] firebrick
Pacific Sewer Pipe Company
Los Angeles, Los Angeles County, CA
1911-1921
Courtesy of Ken Leonard

P.S.P. CO EXCELSIOR firebrick
Pacific Sewer Pipe Company
Los Angeles, Los Angeles County, CA
1911-1921
Courtesy of David Garcia

P.S.P.CO HIGH GRADE firebrick
Pacific Sewer Pipe Company
Los Angeles, Los Angeles County, CA
1911-1921
Courtesy of Mike Bunij

PSP CO 36 R firebrick
Pacific Sewer Pipe Company
Los Angeles, Los Angeles County, CA
1911-1921