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     West side view of Arboretum (Gray Summit) resevoir looking back toward reservoir. ca. 1940-41 
    
   
  
              
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     View at the Arboretum (Gray Summit). Trail house visible to the right. ca. 1940-41 
    
   
  
              
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     View at the Arboretum (Gray Summit) of beaver lodge.
May 1949 - MBG Bulletin Vol. 37 pg. 111. 
    
   
  
              
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     View looking northeast from parking lot at the Arboretum (Gray Summit).. MBG Bulletin Vol. 32, Jan. 1944 - Plate 2 
    
   
  
              
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     View along Old Wire Road (Arboretum) about 1949.
Prep planting of white pines. Set-back planting along Pacific. 
    
   
  
              
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     View at the Arboretum (Gray Summit) in 1926. 
    
   
  
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     Engelmann Botanical Club.  April 1971.  Arboretum 
    
   
  
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     Equipment.  International bull grader in Arboretum lake spillway.   From "The Mechanized Equipment of a Botanical Garden."  Vol 30 September 1942.  Mounted with PHO 2006-0132, PHO 2006-0133, PHO 2006-0135, PHO 2006-0136. 
    
   
  
              
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     Equipment.  International D-S "40" hauling 65-foot poles to Arboretum Trail House.  From "The Mechanized Equipment of a Botanical Garden."  Vol 30 September 1942.  Mounted with PHO 2006-0132, PHO 2006-0133, PHO 2006-0134, PHO 2006-0136. 
    
   
  
              
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     Equipment.  Gray Summit.  Mounted with PHO 2006-0138. 
    
   
  
              
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