Librarian Note: There is more than one author in the Goodreads database with this name. Harry Harrison (born Henry Maxwell Dempsey) was an American science fiction author best known for his character the 
The Stainless Steel Rat and the novel 
Make Room! Make Room! (1966), the basis for the film 
Soylent Green (1973). He was also (with 
Brian W. Aldiss) co-president of the Birmingham Science Fiction Group.
Excerpted from Wikipedia.