Mary Angela Diller (1877-1968) was born to William Augustus Muhlenberg Diller and Mary Abigail Welles. She was the youngest of four children. Diller taught herself how to play the piano at an early age. Her older sister Ellen taught her how to read sheet music. As a teenager, she received lessons from Alice Fowler between 1892 and 1895. In 1899, she founded the Diller-Quaile Institute with Elizabeth Quaile . Diller and Quaile wanted books for the teachers at the school and wrote the Diller-Quaile Series. In 1941, Diller retired from managing the school. Diller was raised an Episcopalian and was influenced by New Thought. She never married and was childless. Near the end of her life she lived in Stamford, Connecticut.
Angela Diller worked in the Sorosis studio.
Sorosis Studio was funded by the New York Carol Club of Sorosis. The small, masonry studio was designed by F. Winsor, Jr., the architect who also designed Savidge Library (1926) and Mixter Studio (1927). At the time of construction, the large porch on the southeast façade offered a spectacular mountain view that has since been obscured…