This might also be of interest to you. From http://ftp.rootsweb.com/pub/usgenweb/ok/okgensoc/23cavcsa.txt .
In 1963 a notebook of Lou Mullins Rowley was found with the following information source unknown.
23rd Tex. Cavalry was organized May 1, 1862 at Coleman Springs. M.J. Mullins 3rd Lieut. Oct. 24, 1862, took Jones' place who resigned. Col. N.C. Gould of KY. K.B. De Bray French General - Velasco on Brazos. Going to Albert S. Johnson and was killed, also Gould was killed there. - Was organized for east Miss. But Gould took them to Brazos. - Louisiana campaign in middle of April and ended May 18, 1864. Matagorda, Tex., April 10, 1862. - First fight at Blairs' Landing. La., down Red River, fighting (every) day from B. L. to Sim's Port at Yellow Bayou at Monroeville April 17. - 18 of June 1862 to 24 of May 1865 - Campaign ended at Yellow Batou, La., May 18, 1864 - Allison speaking "I fought nearly every day till Sept. Sent back with a command in Dec. & Lt. Mullins placed as picket at Mrs. Gordon's ferry on Oylchafalay (pro. Chafalia) River. Was at Pleasant Hall, Blair's Landing & ended at Yellow Bayou. Brigade held at Monroeville until 12 infantry passed. Major commanded two companies to drive sharp shooters and went 2 miles. Lt. Mullins right by me all the time." - Gen. McGuger - Was mustered out at Hempstead, Tex., May 24, 1865 - Col. Gould was discharged at Richmond, Tex., on Brazos River in March, 1865. When regiment dismantled the men were sent home in March 1865. - Mustered into service June 24,1862. - John Allison was Capt. Of Company C, * M. J. Mullins Lieutenant." (Contributed by Dorothy Fry Rowley (Mrs. Spencer Ernest), OGS Member, 3515 N.W. 18th Street, Oklahoma City, Oklahoma, 73107)