In 1916, the year before his untimely death, Scott Joplin recorded 7 piano rolls. These rolls were recorded during a period in which the concept of “hand-played rolls” was still being developed.
Regrettably, several factors undermined Joplin’s recordings. For starters, the recording technology was limited to capturing the start and stop times of notes as well as the up/down positions of the sustain pedal. No dynamics were captured. In the case of the Connorized rolls that he recorded, the temporal resolution of the holes in the paper was rather course, and apparently the roll editors further quantized Joplin's playing.