Included in Contra Costa County Library's Vault Collection at the Pleasant Hill Library are historical directories of local industries and manufacturers. These directories do not circulate.
Unlike city directories, which list businesses by street address, these industry directories only list businesses alphabetically by city.
- CONTRA COSTA DIRECTORY OF MANUFACTURERS
Vault R 917.9463 Contra
Published by the Contra Costa County Development Association
Library holdings: one pre-1948 directory; 1948, 1950, 1952, 1955, 1957, 1958-1959, and 1960-1961
- CONTRA COSTA COUNTY DIRECTORY OF INDUSTRIES
Vault R 917.9463 Contra
Published by the Contra Costa County Development Association
Library holdings: 1962, 1963, 1966, 1967, 1969, 1971, 1974, 1976, and 1980.
- INDUSTRIAL DIRECTORY
Vault R 917.9463 Industrial
Published By the Contra Costa County Development Association
Library Holdings : 1983
- DIRECTORY OF INDUSTRIES & DISTRIBUTORS
Vault R 917.9463 Directory
Published by the Contra Costa County Development Association
Library holdings: 1984
- DIRECTORY OF SELECTED BUSINESSES IN CONTRA COSTA COUNTY
Vault R 917.9463 Directory
Published by the Contra Costa County Development Association
Library holdings: 1985, 1986
- DIRECTORY OF BUSINESSES & INDUSTRY IN CONTRA COSTA COUNTY
Vault R 917.9463 Directory
Published by the Contra Costa Council
Library holdings: 1987; 26 th ed. (1989?); 27 th ed. (1990?); 28 th ed. (1991?); 29 th ed.- (1992?)
- CONTRA COSTA COUNTY COMMERCE & INDUSTRY DIRECTORY
Vault R 917.9463 Contra
First published by the Database Publishing Company. Later published by Harris InfoSource.
Library holdings: 1994, 1996, 1997, 1998, and 1999, and 2000-present