Oklahoma School for the Deaf Oklahoma School for the Deaf Oklahoma School for the Deaf (OSD) is a residential school for the deaf and hard of hearing students ages 2 through 18. The school teaches K-12 students in Sulphur, Oklahoma. The first school in what would later become the state of Oklahoma to give instruction to deaf children was at Fort Gibson.This school, started by a Mrs. Lowery, provided for the education of blind Indian children of the Five Civilized Tribes. Later, deaf children were admitted. In 1898, Mr. and Mrs. Ellsworth Long started a school for deaf children in Guthrie,then the capital of Oklahoma
Oklahoma State Highway 23 the current western terminus of SH-15 was made with what was then Farm to Market Road 1265 to Booker and TX-117 back to Oklahoma.) The connection to Kansas north of US-64 did not exist as a state highway prior to 1957; it first appears on the 1958 state highway map, also signed as SH-15. The highway is not shown as overlapping US-64 and US-270 to Elmwood. SH-23 is first shown replacing SH-15 on the 1959 map, implying the change took place in 1958. Again, SH-23 is not shown as overlapping US-270; it would not be shown as doing such until