I'm looking at the covering on the bass drum near the back hoop of the bass drum. In the enlarged picture the covering looks like it might be fabric.Am I imagining that?
You can't trust any of what's in the colorized picture. It's, essentially, a complete fabrication and poorly done. Compare it to a colorization like this by Marina Amaral, an expert, and you'll see the difference in craft:
[img]https://www.thevintagenews.com/wp-content/uploads/2017/05/3-640x471.jpg[/img]
[img]https://www.demilked.com/magazine/wp-content/uploads/2018/08/5b6d3b6eeb65d-colorized-historic-photos-marina-amaral-8-5b6c078f1adbf__700.jpg[/img]