A Goggle search 10th Mississippi Infantry will bring up a number of hits including a complete unit roster which notes that Capt. Smith was elected Col. May 28, 1861 at age 25.

Additionally, the US Military History Institute lists the following documents related to the 10th in their collections.

Sykes, Edward T. "A Cursory Sketch of General Bragg's Campaigns." Southern Hist Soc Papers 11 (1883): pp. 304-10, 466-74 and 490-97 & 12 (1884): 1-5 (16 photocopied pages). E483.7S76v11&12.

_____. "Chickamauga, a Reply to Major Sykes." Southern Hist Soc Papers 13 (1884): pp. 219-24 (3 photocopied pages). E483.7S76v13.

_____. "The Monument at Munfordville, Address of Major Sykes." Southern Hist Soc Papers 13 (1884): pp. 470-85 (8 photocopied pages). E483.7S76v13.

Warren, Richard. "Mississippi Rifles and Ben Bullard Rifles (Companies A and B), 10th Mississippi Volunteer Infantry, 1861." Mil Collector & Historian (Summer 1997): pp. 86-87. Per.

Edward Turner Sykes was a Captain in Co. E, Regimental Adjutant, promoted Major