The University of Pennsylvania was enlightened enough (and rich enough) in the 1880s to sponsor and publish a series of ambitious photo-books by Eadweard Muybridge (1830-1904) showcasing his newly invented technique of stop-action photography.
Oddly thrilling, the repetitive spectacle of these antique silhouettes – real-life fashions of the 1880s – almost in motion.The same female outlines one is used to from a million Impressionist paintings, but presented here with a literalness the Impressionists would have scorned.
Source is here.