Dr. Moses Greeley Parker graduated from Harvard Medical School in 1864. After enlisting as an Army doctor, he served in several important military positions during the Civil War. For one, he supervised construction and operation of a 4,000 bed military hospital. After the war, he returned to the Lowell area and established his practice. He earned a reputation as a skilled physician and innovated many new medical procedures.
Through his friendship with Alexander Graham Bell, he made wise investments in the American and New England Telephone Companies. Parker introduced the system of using numbers instead of names to complete a call. He died a wealthy man. His will established the Parker Lecture Series that continues to educate and entertain generations of Lowellians.