Possibly builder in partnership with Hagerman.

May have been a builder in partnership with Wright (Wright & Brook, builders).

Talbot Hamlin (1889-1956) was an architect and academic active in the design of ecclesiastical architecture. Hamlin graduated from Amherst College in 1910 and Columbia University's Architecture School in 1914. His early practice included a number of projects in China. Starting in 1920, he was affiliated with Henry McGill. The two worked together in various partnerships from 1921 to 1930. From 1934 until his death in 1956, Hamlin was the Librarian at Avery Architectural and Fine Arts Library at Columbia University.

Theodore A. Havemeyer (May 17, 1839 – April 26, 1897) and his brother, Henry O. Havemeyer, transformed the family sugar refining operation into the Sugar Trust. The brothers were the sons of Frederick C. Havemeyer, Jr. and grandsons of Frederick C. Havemeyer, one of the founding partners of the Havemeyer sugar empire. Theodore oversaw the operations of the refineries and was responsible for the design of the Havemyers & Elder Sugar Refinery (1884) in Williamsburgh.