H&M platforms would have been directly below the Broadway–Lexington Avenue Line's platforms, but above the Steinway Tunnel platforms. The concourse for the station would have been located on the north side of 42nd Street between Depew Place and Park Avenue, with stairways connecting to the Steinway Tunnel platform below. Two elevator shafts would have connected the Steinway Tunnel and the H&M platforms. By 1909, the IRT had constructed an unauthorized ventilation shaft between the 42nd Street Shuttle and the Steinway Tunnel. This would force the H&M to build its station at a very low depth, thus making it harder for any passengers to access the H&M station. As an alternative, it was proposed to connect the Uptown Tubes to the Steinway Tunnel. A franchise to extend the Uptown Tubes to Grand Central was awarded in June 1909, with the expectation that construction could start within six months and that the new extension would be ready by January 1911. However, by 1914, the H&M had not started construction of the Grand Central extension yet, and it wished to delay the start of construction further. By 1920, the H&M had submitted seventeen applications in which they sought to delay construction of the extensions; in all seventeen instances, the H&M had claimed that it was not an appropriate time to construct the tube. This time, the Rapid Transit Commissioners declined this request for a delay, effectively ending the H&M's right to build an extension to Grand Central. 20th century modifications 1920s to 1940s In August 1925, Eastern Offices Inc. signed an agreement to lease land from the New York Central for 21 years to construct the Graybar Building. As part of the agreement, passageways were to be constructed to connect the building with Grand Central Terminal and the subway station. The connection to the subway station would run underneath the sidewalk adjacent to the Hotel Commodore. The new entrance was expected to reduce crowding at the existing northern entrances to the station through the Hotel Commodore at 42nd Street and 43rd Street. In 1928, to alleviate overcrowding on the Lexington Avenue Line, a consulting engineer for the New York State Transit Commission proposed the construction of "reservoir" stations at 33rd/34th and 42nd Streets. The proposal entailed constructing a northbound-only tunnel under Lexington Avenue from 30th to 42nd Street, with stations at 34th and 42nd Streets, then converting the IRT tunnel under Park Avenue