Complex sentence: M. Louise Baker undertook her first work for the University of Pennsylvania Museum of Archaeology and Anthropology in 1908 on the Museum's Nubian pottery collection at the behest of David Randall-MacIver, who was then the director of the Museum's Nubian expedition.
Split into simpler sentences: M. Louise Baker undertook her first work for the University of Pennsylvania Museum of Archaeology and Anthropology in 1908 on the Museum's Nubian pottery collection. This work was at the request of David Randall-MacIver, who was then the director of the Museum's Nubian expedition.