I have a tip about straightening the rotation of images — particularly scanned images. the old photo is younger than 1901 and older than 1930, I believe. Given the image size (approximately 2 1/4 x 3 1/2) I would guess that it was taken by a Kodak Brownie (probably ‘2’) camera. The original image had faded quite a bit. I attempt to use various techniques to recover the image, including: level adjustments, use of high pass filter, use of surface blur filter, use of “split masks”, and attempting to reconstitute “depth” using linear burn (non-destructively) in an “overlay” [not the mode] layer.