Blackwall, OKLAHOMA - Blackwell Hospital:  Blackwell is a city in Kay County, Oklahoma, United States, located at the intersection of U.S. Highway 177 and State Highway 11 along Interstate 35 (exit #222). The population was 7,092 at the 2010 census and 6,085 in the 2020 Census.  Blackwell was established following the September 16, 1893, Cherokee Outlet land run by A. J. Blackwell.  Blackwell has an agricultural and fossil fuel-based economy.  Blackwell came into existence during the Cherokee Outlet Opening on September 16, 1893, in the run known as the Cherokee Strip Land Run. The town is named for A. J. Blackwell, who was the dominant force in its founding. Andrew Blackwell had settled in the area in 1882,[6] having married the former Rosa Vaught who was of Cherokee descent, he was eligible to found the city. Blackwell served as Justice of the Peace and Mayor of Blackwell.  This White Border Era (1915-30) postcard features the Blackwell Hospital.  The card is in good condition.  E. C. Kropp Co. Milwaukee.  No. 24123N