 In 1922 the National Board of Social Welfare (Sosiaalihalitus) commissioned architect Elias Paalanen to design different options of farmhouses, which were then published as a brochure, "Pienasuntojen tyyppipiirustuksia" (Standard drawings for small houses) republished several times.In 1934 Paalanen was commissioned to design an equivalent urban type-house, and he came up with twelve different options.Alvar Aalto, too, became involved, from 1936, in standard small houses, designing for the Ahlström timber and wood product company, with three types of the so-called AA system