 
                            
                        
                        
                        The New Central European Observer, published 1948
Samuel W. Mitcham.
The New Central European Observer, published 1948
                                        
                                        Herbert N. Casson cited in: Forbes magazine (1950) The Forbes scrapbook of Thoughts on the business of life. p. 158 
1950s and later
                                    
Quoted in "The Butcher of Lyon: The Story of Infamous Nazi Klaus Barbie" - Page 140 - by Brendan Murphy - History - 1983
Source: Eternal Treblinka (2002), p. 47
                                        
                                        “Who Can Replace a Man?” p. 19 (originally published in Infinity Science Fiction, June 1958) 
Short fiction, Who Can Replace a Man? (1965)
                                    
Source: The Man With the Iron Heart (2008), p. 63
 
                            
                        
                        
                         
                            
                        
                        
                        