Complex sentence: In addition to mapping out the terrain of home shelves and cupboards, Mogensen was a prolific furniture designer, exhibiting almost every year at the Copenhagen Cabinetmaker's Guild Exhibitions, and was the Head of Furniture Design during the 1940's for the Danish Cooperative Wholesale Society.
Split into simpler sentences: In addition to mapping out the terrain of home storage, Mogensen was a prolific furniture designer, exhibiting almost every year at the Copenhagen Cabinetmaker's Guild Exhibitions. He was also the Head of Furniture Design during the 1940s for the Danish Cooperative Wholesale Society.