Singer Building
- Foundations for the New Singer Building, New York City. In: Transactions of the American Society of Civil Engineers, v. 63, n. 2 (Juni 1909), S. 1-20. (1909):
- Türme aller Zeiten - aller Kulturen. 3. Ausgabe, Deutsche Verlags-Anstalt, Stuttgart (Deutschland), S. 298. (1997):