the new york world's fair was open for two seasons, from april to october each year, and was officially closed on october 27, 1940. during the five-month break between october 1939 and april 1940, #6100 was put back on the system for passenger service and road testing. there is photo evidence showing that the s1 was hauling the manhattan limited, a named train serving as an alternative to the broadway limited, in november 1939.