Girl climbing stairs, Muybridge motion study, 1880s. Series of photographs showing a young girl climbing a set of stairs. These photographs were obtained by English photographer Eadweard J. Muybridge (1830-1904) in his pioneering work documenting the motion of humans and animals. Between 1883 and 1886, Muybridge made more than 100,000 images using his ground-breaking stop-motion photography techniques. He worked in Philadelphia under the auspices of the University of Pennsylvania. The results were published in 'Animal Locomotion' (1887). This study was published in Volume VI: Females (semi-nude and transparent drapery).