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            This is a file from the  Wikimedia Commons. Information from its  description page there is shown below.  Commons is a freely licensed media file repository.  You can help. 
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           | Description | 
           This is a cross section from a black walnut coffin board over 140 years old. I photographed this as part of my thesis research on the tomb this coffin came out of. It was taken with a 10x digital microscope. Author: Fred Sutherland. Taken: January 6, 2006. | 
          
          
           | Date | 
           2006-04-05 (original upload date) | 
          
          
           | Source | 
           Originally from  en.wikipedia; description page is/was  here. | 
          
          
           | Author | 
           Original uploader was  ZenTrowel at  en.wikipedia | 
          
          
           Permission ( Reusing this file) | 
           
             Released into the public domain (by the author). 
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         Licensing 
        
         
          | Public domainPublic domainfalsefalse | 
         
        
        
         
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          This work has been released into the  public domain by its author,  ZenTrowel at the  wikipedia project. This applies worldwide.
 In case this is not legally possible:  ZenTrowel grants anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law. 
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       File usage
       
        The following pages on Schools Wikipedia link to this image (list may be incomplete):
        
        
       
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