Apportionment, New York (N Y. ) Board of Estimate and (1926). Report of the Chief Engineer. p. 26. Archived from the original on June 20, 2022. Retrieved November 28, 2021.
"7th Avenue Subway System Is Opened To Public To-day: First Train Will Start at 2 O'Clock This Afternoon". New-York Tribune. July 1, 1918. p. 9. ProQuest575909557.
"Transit Unification Completed As City Takes Over I. R. T. Lines: Systems Come Under Single Control After Efforts Begun in 1921; Mayor Is Jubilant at City Hall Ceremony Recalling 1904 Celebration". New York Herald Tribune. June 13, 1940. p. 25. ProQuest1248134780.
Apportionment, New York (N Y. ) Board of Estimate and (1926). Report of the Chief Engineer. p. 26. Archived from the original on June 20, 2022. Retrieved November 28, 2021.