Pittsburgh PA: View of the University of Pittsburgh's Nurses Retirement Home in Oakland. Ingham & Boyd started designing fine residences throughout Western Pennsylvania, especially in Edgeworth and Sewickley (1911). They evolved into designing and building public sector and educational institutions. Ingham & Boyd evolved into Ingram, Boyd & Pratt when Ingham’s son, Charles S. Ingham, and Thomas C. Pratt joined the partnership. The successor firm is IKM, Inc.