Eventually, after wage cuts, mining revived somewhat, but production declined and by the 1930 census only 705 residents remained. Remaining, however, were stocks of old commercial buildings and residences, along with excellent snow. Aspen's development as a ski resort began in the 1930s when investors conceived of a ski area, but the project was interrupted by World War II. Friedl Pfeifer, a member of the 10th Mountain Division who had trained in the area, returned to the area and linked up with industrialist Walter Paepcke and his wife Elizabeth. The Aspen Skiing Company was founded in 1946 and the city quickly became a well-known resort, hosting the FIS World Championships in 1950. Paepcke also played an important role in bringing the Goethe Bicentennial Convocation to Aspen in 1949, an event held in a newly designed tent by the architect Eero Saarinen. Aspen was then on the path to becoming an internationally known ski resort and cultural center, home of the Aspen Music Festival and School. The area would continue to grow with the development of three additional ski areas, Buttermilk (1958), Aspen Highlands (1958), and Snowmass (1967).