What is associated with: by 1870 this hatmaker was the leading producer of cowboy hats?

What is associated with: by 1845 the price of these pelts had dropped from a 6 high to 1 silk replaced it for mens hats? What is associated with: by 1845 with john young jl ellis this nyc jeweler switched from selling paste jewels to real? What is associated with: by 1851 this photographers failing eyesight had begun to hamper his work? What is associated with: by 1857 he was producing 10000 steel plows per year? What is associated with: by 1871 it was the largest kingdom in the german empire? What is associated with: by 1877 he had his idea for a story in which edward vi a pauper change places? What is associated with: by 1880 both edison british physicist joseph wilson swan had applied for patents on this type… What is associated with: by 1881 his menlo park home had been set up with a complete electric lighting system?