Johnson came to Detroit in 1950 to work as a draftsman for the Black-owned architectural firm, White & Griffin (led by architects
Donald Frank White and
Francis Eugene Griffin)
. He left White & Griffin around 1953, during the firm's
Liberian design projects. Johnson later worked for Austrian-born architect,
Victor Gruen, who specialized in designing shopping malls. One of his most notable designs was Stanley Mannia Café (1969–1971), a
Googie style Chinese restaurant in Detroit. The later years of Johnson’s career, were spent serving in many official capacities including the Director for the Detroit General Hospital, Commissioner for the Detroit Historic District Commission, & Commissioner for the Wayne County Planning Commission. Johnson joined the
American Institute of Architects (AIA) in Detroit in 1953. At the height of his career, he was a registered architect in 13 states. In 1965, he was the first African American architect to be appointed to the Detroit Board of Education. He won the AIA Detroit Gold medal in 2018. Johnson was a member of the BAG (Black Architects Group) and the Michigan Society of Architects. == Late life and death ==