I would love to see a primary source on that as well. There may be some evidence to back that up, I know the MDAH has a 1st National Confederate flag taken by Samuel Loring Percival Ayres, second assistant engineer of the USS Pensacola, at Vicksburg on July 4, 1863. The flag was made by H. Cassidy, a prominent flag maker in New Orleans, and is 8 ½ feet long