This is a postcard travel folder, printed by Kropp & Co. in Milwaukee…late 40s.  The locomotive is The Olympian.  There are 18 views, printed on standard-weight paper, in this foldout piece. Most are views (scenics, cities, bridges), but two are of other locomotives, which I have scanned in.  I found this folder in Erwin TN.  It sells on ebay for around $5.