Sir Edmund Hillary, the same man that had first climbed Everest in 1953, lead the 1960 trip in association with Desmond Doig. The expedition was sponsored by the World Book Encyclopedia and was well outfitted with trip-wire cameras, as well as timelapse and infrared photography. Despite a ten-month stay the group failed to find any convincing evidence of the existence of the Yeti. The artifacts they examined, two skins and a scalp, turned out to belong to two blue bears and a serow goat.