Analysis of information sources in references of the Wikipedia article "First Avenue (Manhattan)" in English language version.
[May 10, 1813:] The common council orders that First Ave. between 10th and 25th St. be opened and directs the proper officers to carry the same into effect—M. C. C. (1784-1831), VII: 458. On Nov. 1, the attorney was directed to open the avenue from 10th to North [Houston] St. as it would afford a short and direct route to Bellevue.—Ibid., VII: 596-97.