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