| 
            
			
		
			
       
			
            
          
            
     Reynold's Political Map of the United States from 1850. 
    
   
  
              1850  | 
			
             | 
  
            
            
       
			
  | 
            
			
		
			
       
			
            
          
            
     Johnson's and Ward's 1866 map of the United States by Johnson and Ward. Shows the United States immediately after the American Civil War (1861-1865). Some western states are still territories at the time of this map. 
    
   
  
              1866  | 
			
             | 
  
            
            
       
			
  | 
            
			
		
			
       
			
            
          
            
     Description of the Missouri Compromise of 1820. 
    
   
  
              
  | 
			
             | 
  
            
            
       
			
  | 
            
			
		
			
       
			
            
          
            
     Colton's map of Missouri from George Washington Colton's 1855 Atlas of the World. 
    
   
  
              1855  | 
			
             | 
  
            
            
       
			
  | 
            
			
		
			
       
			
            
          
            
     Map of early prairies of St. Louis city including Prairie Des Noyers fields which would become the future location of the Missouri Botahical Garden and Tower Grove Park. 
    
   
  
              
  | 
			
             | 
  
            
            
       
			
  | 
            
			
		
			
       
			
            
          
            
     Map of early prairies of St. Louis and surrounding areas. 
    
   
  
              
  | 
			
             |