However, at the end of this decade he became famous in Germany for his work with the Finnish architect Alvar Aalto.
[1] Until 1933 Voelsckers was the editor of the magazine Stein Holz Eisen (Rock, wood, ice).
After the end of World War II he became very engaged with the reconstruction of Munich and was one of the few architects, that would link his ideas to the Neues Bauen movement, a radical new form proposed for the old city.
Voelckers's reconstruction plan envisioned closed buildings composed of large blocks which were in cooperative ownership, which would have glassed-covered passages and retail areas to encourage use as social centers.
Voelckers was also known for his design of Notstands-Kleinstwohnungen, that was commissioned by the Münchener Wiederaufbau-Referat (Munich Reconstruction Referendum) of 1945–1946.