My grandfather-in-law was a bookbinder by trade. I inherited his handwritten book of formulas and glue recipes, with leather cover and gold leaf accented binding. Probably from the early to mid 1900's. It's deteriorating badly (probably 80-90 years old) but even in this condition it reveals his craftsmanship.
I don't understand it all - plus his handwriting was very fancy with lots of flourishes - but it's a keeper. Of a trade and from a time that has long since vanished from everyday life.