Postcard photo of the "Colorado Special" on the Chicago and North Western bridge at Cedar Rapids, Iowa.  The train appears to be an earlier version of the North Western/Union Pacific jointly operated "City of Denver".
William Baylis
Copyright 1907-William Baylis
<p><a rel="nofollow" class="external text" href="http://www.ebay.com/itm/Colorado-Special-Train-Crossing-C-N-W-Railway-Bridge-Cedar-Rapids-1907-/220995790688?pt=LH_DefaultDomain_0&amp;hash=item3374602760#ht_500wt_1413">eBay item</a>
<a rel="nofollow" class="external text" href="http://i.ebayimg.com/t/Colorado-Special-Train-Crossing-C-N-W-Railway-Bridge-Cedar-Rapids-1907-/00/s/OTk4WDE2MDA=/%24(KGrHqN,!qUE88fkIt(SBPf6ZB3YzQ~~60_57.JPG">card front</a>
</p>
<a rel="nofollow" class="external text" href="http://i.ebayimg.com/t/Colorado-Special-Train-Crossing-C-N-W-Railway-Bridge-Cedar-Rapids-1907-/00/s/OTk2WDE2MDA=/%24(KGrHqV,!rYE88g6(LOVBPf6ZR0lkw~~60_57.JPG">card back</a>