On page 152 of the book,  Portrait of a Silver Lady by Bruce A. MacGregor and Ted Benson, there is a photograph: 
 
 "The guard changed twice in Denver. Burlington turned Seventeen over to subsidiary Colorado & Southern for a turn through the washer and around the 23rd street wye. Glistening in anticipation of a full day's sightseeing, the westbound CZ eases into Union Station behind Burlington 0-6-0 580, carded as C&S number 33 on the D.U.T. timetable. In 1951, Denver was the only place the Zephyr could expect a regular dusting with coal smoke". 
 
 I will attempt to scan in this photograph if my HP printer/scanner and I are on speaking terms. 
 
 Ron Peterson Carmichael, California  
 To: CBQ@yahoogroups.com From: CBQ@yahoogroups.com Date: Mon, 29 Sep 2014 23:29:28 -0500 Subject: [CBQ] Re: CBQ] Re: California Zephyr in Denver
 
  
  
    
      
      
      Thanks for validating my impression that on my first  
  On September 29, 2014, at 1:33PM, "LZadnichek@aol.com [CBQ]"  wrote:
  
 
 
    
      
      
      
September 29, 2014 
  
Hol - Thank you sincerely for further identifying the image of 5143 in 
Denver. Now, as it's said, we know the rest of the story. The Corbin book 
reports that 5143 was sold for scrap in December 1957, so it's comforting to 
know that the O-1-A went out in style as a DUT switcher before her flue 
time ran out. This is the only image I've ever seen of both Q and UP steam 
power side-by-side. Perhaps, this thread will locate an image or two of the 
CZ being switched by steam in Denver. Best Regards - Louis  
  
Louis Zadnichek II 
Fairhope, AL 
  
  
  Louis:  I have seen photos of the 0-6-0s with the CZ 
  here in Denver, but I don't have any such shots in my collection.  And 
  yes, the attached view does show the 5143 as the DUT (Denver Union Terminal) 
  switcher, steaming past UP 812, which sits on track 11, waiting to take 
  No. 57, the Cheyenne local, north one day around 1954.  That's 
  DUT's office/shop building behind the two locomotives; it would have 
  a tower added in 1959 to replace the old interlocking towers, A and B, at each 
  end of the depot trackage.  Hol  
   
  
 
  To:  CBQ@yahoogroups.comFrom:  CBQ@yahoogroups.comDate: Mon, 29 Sep 2014 
  11:20:54 -0400 Subject: Re: [CBQ] Re: California Zephyr in 
  Denver   
  
  
  
  September 29, 
  2014 
    
  Hol - Would that mean the CZ was "steam-powered" for a mile or two 
  through Denver while being wyed? If so, does anyone have an image of a G-10 or 
  O-1-A with the CZ in tow? 
    
  Here is an undated image of O-1-A No. 5143 posed along side a UP 
  4-8-4 in Denver. I assume 5143 is switching the Denver Union Station that day. 
  Best Regards - Louis 
    
  Louis Zadnichek II 
  Fairhope, AL  
    
  ![]()  
    
  
  
  
  
    You're quite right about the way switching was done into the 
    1960s, and it may be worth noting that the regular switcher assigned to work 
    the Denver coachyard and Denver Union Depot was, until 1954, a G-10 0-6-0, 
    with an O-1-A Mike substituting at times and working occasionally into 
    1955.  Hol 
     
    
 
    To:  CBQ@yahoogroups.comFrom:  CBQ@yahoogroups.comDate: Sun, 28 Sep 
    2014 22:38:09 +0000 Subject: Re: [CBQ] Re: California Zephyr in 
    Denver   
    
    
    
    
    Because both the ex-Q and D&RGW lines leave to the north of Union 
    Station, the California Zephyr has always been wyed at Denver.  
    Originally, under the Q, the switcher for the westbound train was attached 
    to the rear of the train after it passed through the trainwash, leaving the 
    inbound Q power to the southwest of the yard to then be moved to the engine 
    facility for servicing.  After the train was platformed in the station, 
    a second switcher might couple to the baggage car, pulling it off to 
    retrieve a Rio Grande coach, before coupling both cars back onto the front 
    of the train.  The Rio Grande power would then be coupled on, allowing 
    the train to proceed north and then west. 
    
  
    In the 60's, probabl y 
    to save costs, and because the Q was adding intermediate head end traffic to 
    Denver (shown in the photo), a single front-coupled switcher did the honors 
    of moving the train through the station.  Amtrak currently uses the 
    train's road locomotives for this purpose.
  
     
    
 
  
    
    
    
    
    
    
      
    
    
    
    
    Chuck:  Sure, you're welcome to use it.  Hol  
    
    
    
 
    To:  CBQ@yahoogroups.comFrom:  CBQ@yahoogroups.comDate: Wed, 24 Sep 2014 10:30:46 -0700 Subject: 
    [CBQ] Re: California Zephyr in Denver   
    
    
    Thanks, Hol, with your permission, I 
    will re-post your reply with that photo.
  
         
     
            
     
      
     
   
  
  
    
   
  
     
     
    
     
     
    
    
     		 	   		   
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         Posted by: Ronald Peterson <rcp95240@outlook.com>          
    
    
    
   
     
 
        
        
    
   
   
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