| William Gretz Brewing Co. | ||
| Philadelphia, PA (1861 - 1960) | ||
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Gretz Beer 1930's |
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Gretz 1940's |
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Gretz Beer 1930's |
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Gretz Beer 1950's |
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| Legal Name | Location | Dates |
| Albert Schwartz | Philadelphia, PA | 1861 - 1871 |
| Grundler & Schwartz | Philadelphia, PA | 1871 - 1872 |
| John Gundler | Philadelphia, PA | 1873 - 1876 |
| Leonard & Frnak Rieger | Philadelphia, PA | 1881 - 1881 |
| Rieger & Gretz, Tivoli Brewery | Philadelphia, PA | 1881 - 1909 |
| Rieger & Gretz Brewing Co. | Philadelphia, PA | 1909 - 1920 |
| William Gretz Brewing Co. | Philadelphia, PA | 1933 - 1960 |