 The latter had invited Aalto to join Congrès International d'Architecture Moderne (CIAM), ostensibly run by Le Corbusier.Aalto's reputation as a significant contributor to modernism was endorsed by his involvement in CIAM and by the inclusion of his works in significant architectural journals worldwide as well as significant histories of architecture, notably in the second edition (1949) of "Space, Time and Architecture" by the secretary-general of CIAM, Sigfried Giedion.Aalto's significant buildings from the early period of Modernism, which basically corresponded to the theoretical principles and architectural aesthetic of Le Corbusier and other modernist architects such as Walter Gropius, include the Turku Sanomat newspaper offices, Turku, Paimio tuberculosis sanatorium (1932) (part of a nationwide campaign for tuberculosis sanatorium construction) and Viipuri Library (1927–35).