One of his students was Mabel Hubbard, daughter of prominent Boston lawyer Gardiner Greene Hubbard. Son of a Massachusetts Supreme Court Justice, Hubbard established water and gas and trolley utilities for Cambridge, Mass. — some of the first in the nation. He also fervently lobbied Congress to replace Western Union’s monopoly on the telegraph with a new corporation, the US Postal Telegraph Company, that would contract with the government Post Office.