Y-leg (table). Photo: Ilmari Kostiainen, Alvar Aalto Museum.

Variations of stool Y 61 with y-legs. Photo: Maija Holma, Alvar Aalto Museum.

This Y-leg chair is a prototype. It was shown in Helsinki Art Hall in 1947, but was never launched into serial production. Photo: Kolmio, Alvar Aalto Museum.

Detail of an Y-leg table with a wooden tray. This version was in production from the end of 1940s until the beginning of 1950s. Photo: Kolmio, Alvar Aalto Museum.

Also this version of the Y-leg table was designed already in 1947. Still in production, the current version of the table has a laminated birch frame. Photo: Ilmari Kostiainen, Alvar Aalto Museum.

Y-leg chair, 1947. This model was also produced at the Hedemora factory in Sweden. Photo: Martti Kapanen, Alvar Aalto Museum.