Franz Max Osswald, 1930-1933, Sound photograph in an architectural model, from Franz Max Osswald's applied acoustics laboratory at ETH Zurich, Photograph, ETH - Eidgenössische Technische Hochschule Zürich, LL/86715
Franz Max Osswald, 1930-1933, Sound photograph in an architectural model, from Franz Max Osswald's applied acoustics laboratory at ETH Zurich, Photograph, ETH - Eidgenössische Technische Hochschule Zürich, LL/86708
Franz Max Osswald, 1930-1933, Sound photograph in an architectural model, from Franz Max Osswald's applied acoustics laboratory at ETH Zurich, Photograph, ETH - Eidgenössische Technische Hochschule Zürich, LL/86707
Franz Max Osswald, 1930-1933, Sound photograph in an architectural model, from Franz Max Osswald's applied acoustics laboratory at ETH Zurich, Photograph, ETH - Eidgenössische Technische Hochschule Zürich, LL/86710
Franz Max Osswald, 1930-1933, Sound photographs in architectural models, from Franz Max Osswald's applied acoustics laboratory at ETH Zurich, Contact print, ETH - Eidgenössische Technische Hochschule Zürich, LL/86705
Franz Max Osswald, 1930-1933, Sound photograph in an architectural model, from Franz Max Osswald's applied acoustics laboratory at ETH Zurich, Photograph, ETH - Eidgenössische Technische Hochschule Zürich, LL/86706
Franz Max Osswald, 1930-1933, Sound photograph in an architectural model, from Franz Max Osswald's applied acoustics laboratory at ETH Zurich, Photograph, ETH - Eidgenössische Technische Hochschule Zürich, LL/86711
Franz Max Osswald, 1930-1933, Sound photograph in an architectural model, from Franz Max Osswald's applied acoustics laboratory at ETH Zurich, Photograph, ETH - Eidgenössische Technische Hochschule Zürich, LL/86714
Franz Max Osswald, 1930-1933, Sound photograph in an architectural model, from Franz Max Osswald's applied acoustics laboratory at ETH Zurich, Photograph, ETH - Eidgenössische Technische Hochschule Zürich, LL/86713
Franz Max Osswald, 1930-1933, Sound photograph in an architectural model, from Franz Max Osswald's applied acoustics laboratory at ETH Zurich, Photograph, ETH - Eidgenössische Technische Hochschule Zürich, LL/86709
Franz Max Osswald, 1930-1933, Sound photograph in an architectural model, from Franz Max Osswald's applied acoustics laboratory at ETH Zurich, Photograph, ETH - Eidgenössische Technische Hochschule Zürich, LL/86712