That doesn't seem to me to have been the same tornado. I checked BLM, online, and the 1900 census at FamilySearch.org.
There wasn't any KILLOP or WISE in Hanson Co. on BLM patents. I found no KING in Taylor Twp., Hanson Co., where Alexandria is.
Wilson WISE patented land in Twp. 106 - 60, and was also of Union Twp., Sanborn Co., in 1900. I couldn't find a patent for KILLOP, but Angus McKILLOP patented land in 107-60, Sanborn Co. There was no Sam KING listed by BLM, but there were James P., John H., & Wm. R. KING in 106-59, Diana Twp.
The SD State Historical Library in Pierre has some newspapers on microfilm.