Will, this is from some quick noodling on the guitar, with the tune coming from memory (haven't actually heard it in years). See if it at least gets close, or helps direct you to an elusive chord.

     Em                                           
  Oh show me the way to the next whiskey bar,     
  Dm                                              
  Oh, don't ask why. Oh, don't ask why.           
     Em                                           
  Oh show me the way to the next whiskey bar,     
  Dm                                              
  Oh, don't ask why. Oh, don't ask why.           
      Em                                          
  For if we don't find the next whiskey bar,      
    Dm                                            
  I tell you we must die, I tell you we must die  
    D                                          G  
  I tell you - I tell you - I tell you we must die
     G                                            
  Oh moon, so far above us                        
                      F#                          
   We now must say goodbye                         
        A                                         
  We've lost our good old Mamas                   
      D                                    G      
  And now we must have whiskey or you know why!