"City Subway Extension, Opening Saturday, Gives New Bronx Link: 6½-Mile Section Follows Concourse, Dips Under Harlem, Joins Independent's Line at 145th St. Underground Stations at 2 Baseball Parks; New System Expected To Be Less Noisy, Cooler in Summer Where Passengers Will Go Upstairs to Board Subway Trains". New York Herald Tribune. June 25, 1933. p. A5. ProQuest1114643923.
"3th Av. Subway Link to Bronx Opens on July 1: Concourse Line Will Be Ready Two Months Earlier Than Expected Test Trains Running Queens Service Expected to Start on August 1". New York Herald Tribune. June 18, 1933. p. 12. ProQuest1114759078.