Paul Moritz Warburg was a German-born American investment banker who served as the second vice chairman of the Federal Reserve from 1916 to 1918. Prior to his term as vice chairman, Warburg served as one of the original members of the Federal Reserve Board, taking office in 1914. He was an early advocate for the establishment of the US central bank system.

Kuhn, Loeb & Co. was an American multinational investment bank founded in 1867 by Abraham Kuhn and his brother-in-law Solomon Loeb. Under the leadership of Jacob H. Schiff, Loeb's son-in-law, it grew to be one of the most influential investment banks in the late 19th and early 20th centuries, financing America's expanding railways and growth companies, including Western Union and Westinghouse, and thereby becoming the principal rival of J.P. Morgan & Co.