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| | CATHOLIC ENCYCLOPEDIA: Cheyenne |
 | | The Diocese of Cheyenne, established 9 August, 1887, is coextensive with the State of Wyoming, an area of 97,575 square miles. |
 | | Wyoming had been included in the Diocese of Omaha, established in 1885; before that it belonged to the Vicariate Apostolic of Nebraska. |
 | | The first Mass, of which there is a record, offered up within the territory of Wyoming was celebrated by the Jesuit missionary, Father De Smet, on the open prairie at the fur-traders' rendezvous on Green River, Sunday, 4 July, 1840. |
| www.newadvent.org /cathen/03651a.htm (327 words) |
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