| ALABAMA |
| Alphons Custodis Chimney Const. Co. | Ragland |
| Birmingham Clay Products Co. | Birmingham |
| Stephenson, L. L. | Lovick |
| ARKANSAS |
| Fort Smith Brick Co. | Fort Smith |
| GEORGIA |
| Legg Brick Co. | Atlanta |
| IDAHO |
| Burley Brick & Sand Co. | Burley |
| Idaho Pressed Brick Co. | Pocatello |
| ILLINOIS |
| Acme Brick Co. | Danville |
| Alton Brick Co. | Alton |
| Barr Clay Co. | Streator |
| Decatur Brick Manufacturing Co. | Decatur |
| Hydraulic-Press Brick Co. | Chicago |
| Lacon Clay & Coal Co. | Lacon |
| Peoria Brick & Tile Co. | Peoria |
| Richards Brick Co. | Edwardsville |
| Southern Fire Brick & Clay Co. | Chicago |
| Streator Brick Co. | Streator |
| Western Brick Co. | Danville |
| IOWA |
| Boone Brick, Tile & Paving Co. | Des Moines |
| Des Moines Clay Co. | Des Moines |
| Hydraulic-Press Brick Co. | Davenport |
| INDIANA |
| Adams Clay Products Co. | Martinsville |
| Brazil Clay Co. | Brazil |
| Brooklyn Brick Co. | Indianapolis |
| Crawfordsville Shale Brick Co. | Crawfordsville |
| Huntingburg Press Brick Co. | Huntingburg |
| Hydraulic-Press Brick Co. | Indianapolis |
| Poston Paving Brick Co. | Crawfordsville |
| Standard Brick Co. | Crawfordsville |
| Standard Brick Manufacturing Co. | Evansville |
| U. S. Brick Co. | Tell City |
| KANSAS |
| Cherryvale Brick Co. | Cherryvale |
| Coffeyville Vit. Brick & Tile Co. | Coffeyville |
| V. V. V. Brick & Tile Co. | Neodesha |
| KENTUCKY |
| Coral Ridge Clay Products Co. | Louisville |
| Sphar Brick Co. | Maysville |
| MICHIGAN |
| Briggs Company, The | Lansing |
| MINNESOTA |
| Hydraulic-Press Brick Co. | Minneapolis |
| Twin City Brick Co. | St. Paul |
| MISSISSIPPI |
| Brookhaven Pressed Brick & Mfg. Co. | Brookhaven |
| MISSOURI |
| Hydraulic-Press Brick Co. | Kansas City |
| Hydraulic-Press Brick Co. | St. Louis |
| Kansas Buff Brick & Mfg. Co. | Kansas City |
| NEW JERSEY |
| Krantz Company, A. M. | Paterson |
| Upper Kittanning Brick Co. | Jersey City |
| NEW YORK |
| Jewettville Clay Products Co. | Buffalo |
| NORTH CAROLINA |
| Statesville Brick Co. | Statesville |
| OHIO |
| Acme Brick Co. | Marietta |
| Alliance Brick Co. | Alliance |
| Belden Brick Co. | Canton |
| Claycraft Mining & Brick Co. | Columbus |
| Colonial Pressed Brick Co. | Mogadore |
| Duro Brick Mfg. Co. | Akron |
| Everhard Company, The | Massillon |
| Franklin Brick & Tile Co. | Columbus |
| Fultonham Texture Brick Co. | E. Fultonham |
| Hanover Brick Co. | Columbus |
| Hocking Valley Fire Clay Co. | Nelsonville |
| Hocking Valley Products Co. | Columbus |
| Hydraulic-Press Brick Co. | Cleveland |
| Hydraulic-Press Brick Co. | Roseville |
| Ironclay Brick Co. | Columbus |
| McArthur Brick Co. | McArthur |
| Marietta Shale Brick Co. | Marietta |
| Stark Brick Co. | Canton |
| Straitsville Impervious Brick Co. | New Straitsville |
| Toronto Fire Clay Co. | Toronto |
| Webster Brick Co. | Chillicothe |
| OKLAHOMA |
| Muskogee Vitrified Brick Co. | Muskogee |
| Pawhuska Vit. Brick Si Tile Co. | Pawhuska |
| PENNSYLVANIA |
| Alumina Shale Brick Co. | Bradford |
| Auburn Shale Brick Co. | Auburn |
| Bloomsburg Brick Co. | Bloomsburg |
| Beaver Clay Mfg. Co. | New Galilee |
| Bradford Pressed Brick Co. | Bradford |
| Darlington Brick & Mining Co. | Darlington |
| Darlington Clay Products Co. | Darlington |
| Fallston Fire Clay Co. | Pittsburgh |
| Ferro Brick Co. | Watsontown |
| Gloninger & Co. | Pittsburgh |
| Hydraulic-Press Brick Co. | Du Bois |
| Hydraulic-Press Brick Co. | Philadelphia |
| Kane Brick & Tile Co. | St. Marys |
| Keystone Clay Products Co. | Greensburg |
| Kittanning Brick & Fire Clay Co. | Pittsburgh |
| Kittanning Clay Mfg. Co. | Kittanning |
| Kittanning Clay Products Co. | Bradford |
| Kushequa Brick Co. | Kushequa |
| Latrobe Brick Co. | Latrobe |
| Mill Hall Brick Works | Lock Haven |
| Milton Brick Co. | Milton |
| Penn Brick Corporation | Bradford |
| Pittsburgh-Callery Brick Co. | Pittsburgh |
| Ridgway Brick Co. | Watsontown |
| Rochester Clay Products Co. | Rochester |
| Stuempfle's Sons, David | Williamsport |
| Vanport Brick Co. | Pittsburgh |
| Walker Brick Co., Hay | Pittsburgh |
| Walkers Mills Stone & Brick Co. | Pittsburgh |
| Watsontown Brick Co. | Watsontown |
| Williamsgrove Brick Co. | Bigler |
| Wynn & Starr Co. | Trafford |
| Yingling-Martin Brick Co. | Pittsburgh |
| SOUTH CAROLINA |
| Sumter Brick Works | Sumter |
| TENNESSEE |
| Bush & Company, W. G. | Nashville |
| Dixie Brick & Tile Co. | Puryear |
| Key-James Brick Co. | Alton Park |
| TEXAS |
| Acme Brick Co. | Fort Worth |
| Elgin-Butler Brick & Tile Co. | Austin |
| Elgin-Standard Brick Mfg. Co. | Elgin |
| UTAH |
| Ashton Fire Brick & Tile Co. | Ogden |
| Ogden Pressed Brick & Tile Co. | Ogden |
| Salt Lake Pressed Brick Co. | Salt Lake City |
| Utah Fire Clay Co. | Salt Lake City |
| WASHINGTON, D. C. |
| Hydraulic-Press Brick Co. | Washington |
| G. C. Mars, Director of Service Department |
