The crossword solution for the term 'Leopold and ____' is Loeb, which refers to the two brothers, Alfred and Jacob Loeb. Alfred and Jacob Loeb were German-born American businessmen who founded the Loeb, Rhoades & Co. investment banking firm in New York City in the late 19th century. They were also known for their philanthropy, donating large sums of money to various charities and educational institutions.