Astra Dome
... that the American Car and Foundry Company's Astra Dome dome cars included the only dome dining cars ever operated by a railroad in the United States?
... that the <a href="./American_Car_and_Foundry_Company" id="mwCXI" rel="mw:WikiLink" title="American Car and Foundry Company">American Car and Foundry Company</a>'s <b id="mwCXM"><a href="./Astra_Dome" id="mwCXQ" rel="mw:WikiLink" title="Astra Dome">Astra Dome</a></b> <a href="./Dome_car" id="mwCXU" rel="mw:WikiLink" title="Dome car">dome cars</a> included the only <a href="./Dining_car" id="mwCXY" rel="mw:WikiLink" title="Dining car">dome dining cars</a> ever operated by a railroad in the United States?