How to clean text from background

[Hymer]

Thank you, it will be good result, but I have to work on it. Untill now I could not find the right setting of the curve to make the whole text readable on this old midwife-diplom from 1844... I'll try to make better photo too, but I cannot take away the glass. This is the best photo I could made about the whole. I suppose, I have to take photo about details and it will be better.