Al Berry, a former officer in Vietnam, was responsible for fostering the original study of the Bigfoot Recordings at the University of Wyoming. Al held a Master of Science degree.
In 1971 he was the investigative reporter that was allowed to trek into the Sierra camp. Although he was seeking a hoax, he failed to find one. To his dying day he thought it would have made the story even more interesting if he could have discovered how anyone could have pulled this off.
Al wrote about his account in 1976 (Bantam book, “Bigfoot”), co-authored by Ann Slate. The first three chapters are dedicated to the Sierra camp encounters.