 The scrolls are either 24 or 36 inches high and Calloway made them anywhere from 8 to over 60 feet in length.While he claimed to be 112 years of age in 2008, research by gerontology experts deduced that he was actually born in 1915.While Calloway had always done some drawing, his prolific output as an artist dates from the time he took an art class in the 1980s.