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        Summary 
        
         
          
           | Description | 
           Hippopotamus-polka-early1850s.jpg Cover for sheet music of the "The Hippopotamus Polka", published in the early 1850's (see  en:Obaysch) by W. Hall & Son, 259 Broadway, New York. The song was by Louis St. Mars, while the illustration of the young lady dancing the polka with a hippo was by John H. Sherwin from the lithography studios of  Napoleon Sarony 
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           | Date | 
           early 1850s | 
          
          
           | Source | 
            http://www.library.upenn.edu/exhibits/rbm/music/sheet.html | 
          
          
           | Author | 
           John H. Sherwin 
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        Licensing 
        
         
          | Public domainPublic domainfalsefalse | 
         
        
        
         
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          This work is in the  public domain in the United States because it was published before January 1, 1923.  
           This work is also in the public domain in countries and areas where the  copyright term is the author's life plus 100 years or less. 
            
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