Grazulis, T. P.: Significant Tornadoes, 1680-1991.
 Harrison Gazette, Gotebo OK, Friday, May 12, 1905.
 Time zones in the United States were established for the sake of the railroads in the 1880s, but were not necessarily adopted universally – even in 1905. Since Snyder was a railroad town, at the crossroads of two railroads, it can be safely assumed that Snyder and the surrounding areas adhered to the Central Time Zone. There was no such thing as Daylight Savings Time until 1918.
 Daily Oklahoman, Oklahoma City, Saturday, May 13 1905.
 Strong, C.M., “The Tornado of May 10, 1905 at Snyder, Okla.”, Monthly Weather Review, August 1905.
 Snyder Signal-Star , dated Friday, May 19, 1905.
 Altus Times, Thursday, May 11 1905. Lock had a reported population of 38, and consisted of a school, post office, one or two stores, and several homes.
 Altus Times, Friday, May 18, 1905.
 Snyder Signal-Star, dated Friday, May 12 1905.
 Guthrie Daily Leader, Thursday, May 11, 1905.
 The Granite Enterprise, Thursday, May 11, 1905.
 Associated Press news release; exact date unknown, but written in the days immediately flowing the tornado.
 The Hobart News Republican, Friday, May 12, 1905.
 Daily Oklahoman, Oklahoma City, Friday, May 12, 1905.
 Frederick Enterprise, Friday, May 12, 1905.
 The Washita Breeze, Bessie OK, Friday, May 12 1905.
 Newspaper accounts at the time varied considerably in their estimates of the population of Snyder. Figures ranged from as few as 600 to as many as 2,000. Today, the actual population in 1905 is estimated to have been somewhere between 800 and 1,200.
The Mangum Star, May 11 1905.
 Altus Weekly News, Thursday, May 11 1905.
 According to local residents, stories of the Snyder disaster eventually appeared in the New York Times and London Times.
 Kelley, Leo: “Oklahoma: Home of the Real Twisters.” The Chronicles of Oklahoma, Oklahoma Historical Society, Winter 1996-1997, p. 428.
 The Washita Breeze, Bessie OK, Friday, May 12, 1905.
 Kiowa County Democrat, May 10 1906. Article appeared originally in the Manitou Field-Glass.
 This story, and the ones preceding, appeared with only slight variations in several of the local newspapers following the tornado.
 Kelley, Leo: “Oklahoma: Home of the Real Twisters.” The Chronicles of Oklahoma, Okla. Hist. Soc., Winter 1996-1997, p. 430. Five references are listed therein to support the death count of “about 120.”
 A fire in 1906 burned most of the business area east of E street (main street). Another fire in 1909 burned most of the business area on the west side of E street.
 Snyder Hotel damage photo and pre-tornado Snyder street photo provided courtesy of the Kiowa County Democrat, Snyder, Oklahoma.
U. S. Department of Commerce National Oceanic and Atmospheric Administration/NOAA Central Library Data Imaging Project. Daily Weather Maps, 9 May-11 May 1905.
United States Government. Army Air Forces and Weather Bureau. Historical Weather Maps: Daily Synoptic Series, Northern Hemisphere Sea Level, May 1905.