Check them out. These are not black & white photos colored later. Sergei Mikhailovich Prokudin-Gorskii (1863-1944) took these photos in the first decade of the 20th century. He took 3 photos in red, green, blue individually and combined them. Amazing what color does; it looks so real, but you're so used to seeing old photos in black & white, it makes you think they must be fake. So often I've seen old photos and thought "what color was her hat? That building? His belt?" And now we know!