 Maspero appointed English archaeologist Howard Carter as the Chief Inspector of Upper Egypt, and the young man discovered several new tombs and explored several others, clearing KV42 and KV20.Around the start of the 20th century, American explorer Theodore M. Davis had the excavation permit for the valley.His team (led mostly by Edward R. Ayrton) discovered several royal and non-royal tombs (including KV43, KV46 and KV57).