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        Summary 
        
         
          
           | Description | 
            en:Donald Knuth at a reception for the  en:Open Content Alliance, hosted by the  en:Internet Archive. Taken October 25, 2005 by  Jacob Appelbaum in  en:San Francisco. | 
          
          
           | Date | 
           25 October 2005 | 
          
          
           | Source | 
            Flickr.com (via en.wikipedia) | 
          
          
           | Author | 
           Flickr user  Jacob Appelbaum, uploaded to  en.wikipedia by users  BeSherman,  Duozmo | 
          
          
           Permission ( Reusing this file) | 
           
            
            
             
                | 
              This image, originally posted to  Flickr, was reviewed on 9 April 2007 by the  administrator or  reviewer  Davepape, who confirmed that it was available on Flickr under the stated license on that date. | 
              
             
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        (Uploaded using  CommonsHelper or  PushForCommons)
        Originally from  en.wikipedia
        
         - 23:21, 18 February 2006  BeSherman 427×505 (45,332 bytes) 
 
         - 21:36, 28 October 2005  Duozmo 427×505 (26,800 bytes) 
 
        
        
        
        
       File usage
       
        The following pages on Schools Wikipedia link to this image (list may be incomplete):
        
        
       
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