I've also since found the diary of Albert C. Lenert, Waul's Texas Legion here:
https://scholarworks.sfasu.edu/cgi/viewcontent.cgi?article=1414&context=ethj
He began his diary at the beginning of the siege on May 17 and stopped writing before the end with his last entry on June 10, though he survived the siege and the war.
https://scholarworks.sfasu.edu/cgi/viewcontent.cgi?article=1414&context=ethj
He began his diary at the beginning of the siege on May 17 and stopped writing before the end with his last entry on June 10, though he survived the siege and the war.