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Bartlett's Familiar Quotations, 10th ed. (1919)
                                    
Electrical Papers (1882), Vol. I; Preface, p. vii; Maxmillan and Co., London and New York. Full Text http://www.archive.org/details/electricalpaper00heavgoog.
                                        
                                        The disagreeable Man (from Princess Ida). 
Bartlett's Familiar Quotations, 10th ed. (1919)
                                    
Interview with David Brancaccio (2003)
As quoted in "At 90, and Still Dynamic : Revisiting Sir Karl Popper and Attending His Birthday Party" by Eugene Yue-Ching Ho, in Intellectus 23 (Jul-Sep 1992) http://www.eeng.dcu.ie/~tkpw/hk-ies/n23a/
                                        
                                         How I do my computing (2006) http://stallman.org/stallman-computing.html 
2000s
                                    
The Life of Edward Jenner: With Illustrations of His Doctrines, and Selections from His Correspondence https://books.google.com.mx/books?id=7K9iwCjoUgkC&printsec=frontcover#v=onepage&q&f=false, Vol. 2 (1838), by John Baron, p. 295
Waldersee in an interview to The New York Herald, 24 July 1892
                                        
                                        interview conducted by David Sylvester for the BBC, 1962; as quoted in Abstract Expressionism: Creators and Critics, edited by Clifford Ross, Abrahams Publishers, New York 1990, p. 45. 
1960's
                                    
 
                            
                        
                        
                         
                            
                        
                        
                         
                            
                        
                        
                         
                            
                        
                        
                         
                            
                        
                        
                        