Unfortunately, I can’t remember any urls or names of books and other publications of the era at the moment, but maybe someone will see this post and accommodate us."
I know exactly what you're talking about.
There was a Civil War black Confederate regiment in New Orleans -- The First Louisiana Native Guard (CSA).
It formed on April 22, 1861 about 1,500 free-blacks strong, in response to the Louisiana governor's call for troops.
This was from a New Orleans free-black population estimated around 10,000.
First Louisiana was commanded by three white officers, with company commanders appointed from among the troops.
The First Louisiana fought no battles, provided no other service to the Confederacy.
In January 1862 the Louisiana Legislature effectively disbanded the First Louisiana by outlawing units other than "...free white males capable of bearing arms… ”.[5]
The regiment was reinstated in April 1861 to oppose Union Admiral Farragut's arrival but was permanently disbanded on May 24, 1861 by Confederate authorities.
With New Orleans under Union control, it formed three colored regiments, beginning in September 1862 -- the First, Second and Third Louisiana Native Guards (USA).
Some of the troops in these units had served originally in the First Louisiana Native Guards (CSA).
As for photos, there are a number purported to be of the CSA 1st Louisiana Native Guard which on closer look turn out to be something else, this one for example:
I think the story on this photo is it's a Union recruiting photo taken in Philadelphia, but doctored sometimes passes as Confederate.
