"The Passing of Old Hotels"(PDF). The Real Estate Record: Real Estate Record and Builders' Guide. Vol. 93, no. 2407. May 5, 1914. p. 818. Archived(PDF) from the original on October 20, 2019. Retrieved May 11, 2020 – via columbia.edu.
"Builders Buy Grand Union Site"(PDF). The Real Estate Record: Real Estate Record and Builders' Guide. Vol. 106, no. 6. August 7, 1920. p. 787. Archived(PDF) from the original on October 20, 2019. Retrieved May 11, 2020 – via columbia.edu.
"The Passing of Old Hotels"(PDF). The Real Estate Record: Real Estate Record and Builders' Guide. Vol. 93, no. 2407. May 5, 1914. p. 818. Archived(PDF) from the original on October 20, 2019. Retrieved May 11, 2020 – via columbia.edu.
"Builders Buy Grand Union Site"(PDF). The Real Estate Record: Real Estate Record and Builders' Guide. Vol. 106, no. 6. August 7, 1920. p. 787. Archived(PDF) from the original on October 20, 2019. Retrieved May 11, 2020 – via columbia.edu.