| Brand name： | Keystone Type |
| English name： | Keystone Type Foundry |
| Country or region： | United States |
| Address： | Philadelphia, PA |
| Brand name： | Keystone Type |
| English name： | Keystone Type Foundry |
| Country or region： | United States |
| Address： | Philadelphia, PA |
An independent type foundry established in Philadelphia in 1888. In 1917, the foundry was purchased by American Type Founders.