Complex sentence: In 1941 Rose worked for Tuttle, Seelye, Place and Raymond in New York where he became discouraged by the limitations of large public works, and decided that working on private gardens was more suiting to his style.
Split into simpler sentences: In 1941 Rose worked for Tuttle, Seelye, Place and Raymond in New York. He became discouraged by the limitations of large public works and decided that working on private gardens was more suiting to his style.