A. Hoen & Co
     Organization 
  
Found in 341 Collections and/or Records:
Map and Profile of the Location of the Baltimore and Ohio Rail Road from Cumberland to Wheeling, 1850
     File 
  
          Dates: 
        1850
      
      
   Map and Profile of the Permanent Water Supply from the Great Gunpowder Falls to Baltimore, circa 1875
     File 
  
          Dates: 
        circa 1875
      
      
   