| District 4 |
 Website for District 4. You will find the complete District Tournament Calendar here as well as information on all topics related to bridge within District 4.
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| ACBL |
 The official American Contract Bridge League site.
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| USBF |
 United States Bridge Federation is the official sanctioning body for United States teams entered in world events.
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| World Bridge Federation |
 World Bridge Federation is the sanctioning body for world events.
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| BBO |
 BBO (Bridge Base Online). Play bridge online including ACBL sanctioned tournaments. Vugraph and many educational features.
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| Bridge Winners |
 Bridge Winners is an excellent site for articles, forums, and education.
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