These are some covers of booklets which were sold at human zoos. Some contain details of the daily performances: times of shows and explanations what to expect; some ethnographic, geographic and historic information on the regions of origin and the displayed peoples. Others contain only images.
In any case they delivery important insight in the daily routine of human zoos and the the groups who were shown. In some cases the contained information can help to identify participating individuals – which is often a very difficult task.