 
                            
                        
                        
                        1870s, Self-Made Men (1872)
(1942) Spencie Love, One Blood: The Death and Resurrection of Charles R. Drew (1996) ISBN 0-8078-2250-7, 155-56, quoting as it appeared in Current Biography (1944), 180.
1870s, Self-Made Men (1872)
“Blood doubly unites us, for we share the same blood and we have spilled blood.”
                                        
                                        Orestes to Electra, Act 2 
The Flies (1943)
                                    
"The Relation of Jazz to American Music", in Henry Cowell (ed.) American Composers on American Music (1933); reprinted in Gregory R. Suriano (ed.) Gershwin in His Time (New York: Gramercy, 1998) p. 97.
1910s, Address to the Knights of Columbus (1915)
                                
                                    “Love for Love
And Blood for Blood—the simple golden rule
Taught by the elder gods.”
                                
                                
                                
                                
                            
                                        
                                        Book I: Tartarus. "Clytemnestra", line125; p. 62. 
The Epic of Hades (1877)
                                    
                                        
                                        Though this had been  cited as being from a letter objecting to the use of government land for churches in 1803 https://web.archive.org/web/20061123043628/http://www.positiveatheism.org///hist/quotes/madison.htm#PHONYMAD, as quoted in 2000 Years of Disbelief: Famous People With the Courage to Doubt (1996) edited by James A Haught, no original source for this has yet been found. 
Misattributed
                                    
                                        
                                        Vol. I, Ch. 31, pg. 829. 
(Buch I) (1867)
                                    
                                        
                                         Letter to Robert E. Lee (7 April 1865). https://www.facebook.com/SUVCW/posts/783255298389995 
1860s
                                    
                                        
                                        The Collected Works of Langston Hughes, V. 13, The Big Sea (2002), p. 36 
The Big Sea (1940)
                                    
 
                            
                        
                        
                         
                            
                        
                        
                         
                            
                        
                        
                         
                            
                        
                        
                         
                            
                        
                        
                         
                            
                        
                        
                         
                            
                        
                        
                        