Fort Henning.—Shortly after President Lincoln's second call for volunteers in the spring of 1861, three blockhouses were erected at Fort Scott for the purpose of guarding quartermaster's, hospital and ordnance stores. Fort Henning, one of these blockhouses, stood at the corner of Scott avenue and First street, on the site afterward occupied by the postoffice building. It was built under the supervision of Capt. William Holcke, an engineer of the United States army, who also superintended the erection of the other two blockhouses. Some years after the war Fort Henning was purchased by Dr. W. S. McDonald and removed to the lot immediately south of his residence, in order that it might be preserved as a historic relic of the war. On Dec. 3, 1904, a flag was raised over old Fort Henning in its new location with appropriate ceremonies. While the fort was used for military purposes it was garrisoned by troops belonging to the Sixth Kansas, under command of Lieut. C. H. Haynes. (See also Forts Blair and Insley.)