Indeed, resistance to institutionalized white supremacy dates back to the formal establishment of segregation in the late nineteenth century.
One advantage it did possess over the silver daguerreotype was that it did not tarnish.
Police said if you plan to meet someone you do not know, be sure to meet in a well-lit area where there are lots of people.
Image on Glass Dating ambrotype photographs is fairly easy for genealogists.
It is a cased image like the daguerreotype, but it was short-lived.
The ambrotype was only in popular production for about ten years.