In reading order
The Stainless Steel Rat
Harry Harrison
The Stainless Steel Rat's Revenge
Harry Harrison
The Stainless Steel Rat Saves the World
Harry Harrison
The Stainless Steel Rat Wants You
Harry Harrison
The Stainless Steel Rat for President
Harry Harrison
A Stainless Steel Rat Is Born
Harry Harrison
The Stainless Steel Rat Gets Drafted
Harry Harrison
The Stainless Steel Rat Sings the Blues
Harry Harrison
The Stainless Steel Rat Goes to Hell
Harry Harrison
The Stainless Steel Rat Joins the Circus
Harry Harrison
The Stainless Steel Rat Returns
Harry Harrison