Cass Gilbert which now houses the George Gustav Heye Center. Gilbert served on the U.S. Commission of Fine Arts from 1910 to 1916. In 1906 he was elected into the National Academy of Design as an Associate member, and became a full Academician in 1908. Gilbert served as President of the Academy from 1926 to 1933. Gilbert was a skyscraper pioneer; when designing the Woolworth Building he moved into unproven ground — though he certainly was aware of the ground-breaking work done by Chicago architects on skyscrapers and once discussed merging firms with the legendary Daniel Burnham — and his technique of
David Cass optimal portfolio under the restriction of being able to buy only two mutual funds. They also showed that generally the demand for money can not be derived from portfolio theory. Cass was also a major contributor to the theory of incomplete markets, the turnpike theory and theory of economies with markets that repeatedly open over time. Dave Cass's first major contribution to economics was the characterization of optimal growth trajectories in his thesis work under Hirofumi Uzawa’s supervision at Stanford University. The celebrated Cass criterion for optimal time paths in the one good growth model quickly followed. The essence of