ComCo, Coral Gables, Fla. became a wholly-owned subsidiary of E. F. Johnson Co., Waseca, Minn. Waseca business: E. F. Johnson Co. Waseca business: E.F. Johnson Co.; E.F. Johnson Company; E.F. Johnson Corporate Headquarters; E.F. Johnson Company Corporate Headquarters; E.F. Johnson Co. Corporate Headquarters; E. F. Johnson Co.; E. F. Johnson Company; E. F. Johnson Corporate Headquarters; E. F. Johnson Company Corporate Headquarters; E. F. Johnson Co. Corporate Headquarters.