Hi there!
I don't wish to cause a controversy, but when it comes to using photographs in my books I invariably find myself in a quandary.
I'm the first to admit that I don't fully understand copyright laws, that seem to vary from country to country, but perhaps naively I believe that photographs, particularly of a historical nature, should be available for all to see - and use. Surely no one 'owns' them apart from the individual who took the original, and presumably he/she would have wanted to share the image? Surely, the more who see the image in an appropriate setting, the greater appreciation of said image will be possible?
take photos from here:
https://damagedphotorestoration.com/
can find something useful, good luck with your research)