on shore north of Keokuk, Iowa, and over the track. 'Injun Joe' and 'Becky Thatcher' derailed as a result of striking the barge. There was only one minor injury, and the 19 passengers on board continued to Burlington via a Keokuk City bus. Rail traffic had to be rerouted via the Carthage branch until the two units could be re-railed. The first wrecker sent from Galesburg was too light for the task and a second wrecker had to be sent. Less than one year later, on Sunday, August 19, 1951, newspaper reports indicate that a barge also was washed ashore and over the tracks of the K-Line near the exact same spot in Keokuk. Luckily, the engineer was able to slow down in time and the Mark Twain Zephyr did not end up striking it. There was, however, a delay for workers to clear the tracks. In many ways, the articulated design of the Mark Twain Zephyr, which was done to make the train more aerodynamic, became its own downfall. Due to the fixed design, the CB&Q could not add additional cars to the train set during peak travel periods. Crews often had to set up folding chairs in the baggage car for overflow seating, especially during holiday weekends and the even the weekly southbound run into St. Louis on Sunday evenings. The Mark Twain Zephyr saw its last day of operation on April 27, 1958. It was replaced by other diesel trains that could have coaches added or subtracted due to demand. Previous private ownership After being retired by the Chicago, Burlington and Quincy Railroad (CB&Q) in April 1958, the Mark Twain Zephyr was put into storage at a locomotive shop in West Burlington, Iowa. In June 1960, the Mark Twain Zephyr was purchased by Charles "Frank" Dashner of Glenwood, Iowa. Dashner's original plan was to sell the train to Cuba, however rising tensions over Communism and the Cuban Missile Crisis quickly put an end to that opportunity. Dashner then wanted to develop the Mark Twain Zephyr into a rail-themed restaurant and motel, which would have been located at the then newly built Interstate 29 and U.S. Highway 34 intersection. Before Dashner could make the final payment on the Mark Twain Zephyr, he died on February 24, 1961, at the age of 51. The Mark Twain Zephyr had not been moved, pending final payment, remaining at the CB&Q Shops