Mario Terzaghi (1915-1998) and Augusto Magnaghi (1914 -1963) studied and worked together until the untimely death of the latter in 1963.
Their work before the Second World War was influenced by training within a rationalist context (training that Mario Terzaghi had undergone at the studio of Terragni and Lingeri).
Their first work to gain critical acclaim was a residential building in Fino Mornasco (CO) constructed in 1939.
After World War II their work in architecture and town planning was centred on their participation in the design of residential buildings in Milan (especially for the QT8, Feltre and Bovisasca districts) and in the province of Milan (for INA-Casa), as well as medical facilities for INAM.
The two architects were also very active in the creation of installations areas (the Flower Pavillion at the 10th Milan Triennale) and objects design (the Bica handle for Olivari, fitted kitchens for Saffa, for which they won the Compasso d’Oro and various furnishing for FGB Italy).