Carbon Limestone locomotive D-9, a small diesel-hydraulic locomotive made by the <a href="https://en.wikipedia.org/wiki/Plymouth_Locomotive_Works" class="extiw" title="w:Plymouth Locomotive Works">Plymouth Locomotive Works</a> and <a href="https://en.wikipedia.org/wiki/White_Pass_and_Yukon_Route" class="extiw" title="w:White Pass and Yukon Route">White Pass and Yukon</a> caboose 903 operating on the <a href="https://en.wikipedia.org/wiki/Three_foot_gauge_railways" class="extiw" title="w:Three foot gauge railways">3-foot gauge</a> track of the <a href="https://en.wikipedia.org/wiki/Midwest_Central_Railroad" class="extiw" title="w:Midwest Central Railroad">Midwest Central Railroad</a>.  Locomotive D-9 was built in 1956 to operate on 3 ft 2 in gauge track and was regauged after acquisition by the Midwest Central in the 1990s.  Caboose 903 was purchased from the WP&amp;Y in 1991.
<a href="//commons.wikimedia.org/wiki/User:Douglas_W._Jones" title="User:Douglas W. Jones">Douglas W. Jones</a>
<span class="int-own-work" lang="en">Own work</span>