From "About the Author" from Wheel-World:

HARRY HARRISON, one of the most prolific and successful science fiction writers, worked as a commercial artist, art director and editor, before settling on a career as a freelance writer.  A past president of the World Science Fiction Writers' Association, Mr. Harrison was born in Connecticut and has lived in various European countries over the years.  A recipient of numerous awards and honors, his Stainless Steel Rat books are as well known as they are humorous.  His other books include Deathworld, Deathworld 2 and Make Room, Make Room, his anti-utopian novel on which the movie Soylent Green was based.  Harry Harrison now lives in Ireland.