He started as an animator at Walt Disney Animation Studios in the late 1930s and worked on Donald Duck and Ferdinand the Bull animations. In the 1940s, Evans worked for Ted Eshbaugh and US Army Air Force First Motion Picture Unit, where he animated the Army Training Films. In 1955, he joined United Productions of America (UPA). He first started as an animator on the Mr. Magoo series but was soon promoted to the director position on the Gerald McBoing Boing series, and the associate director position on 1001 Arabian Nights (1959) for the Mr. Magoo series. In the 1960s, Evans also directed The Alvin Show for Format Films.
Lenburg, Jeff. Who’s Who in Animated Cartoons. Applause Theatre & Cinema Books, 2006.
Maltin, Leonard. Of Mice and Magic: A History of American Animated Cartoons. New York: McGraw-Hill, 1980.