McKissack & McKissack is an American architecture, engineering, program management and construction firm based in Washington, D.C. It is the oldest minority-owned architecture and construction company in the United States. The firm was founded in 1905 in Nashville, Tennessee by Moses McKissack, the grandson of a slave who had been brought to the United States from west Africa and put to work making bricks. Moses III, the slave's grandson, became an accomplished carpenter and eventually teamed with his brother Calvin McKissack to found the company.