Indian Meridian

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The Indian Meridian, in longitude 97° 14' 30" west from Greenwich, extends from Red River to the south boundary of Kansas, and, with the base line in latitude 34° 30' north, governs the surveys in Oklahoma east of 100° west longitude from Greenwich.

[edit] Source

• Raymond, William Galt (1914). Plane Surveying for Use in the Classroom and Field (via Google Books), New York: American Book Company.