Wikimedi'Òc

Harmonium, M. Hörügel, Leipzig, 1933, Inv.-Nr.4081, MfM.Uni-Leipzig.jpg - Flickr upload bot

Harmonium stops, M. Hörügel, Leipzig, 1933, Inv.-Nr.4081, MfM.Uni-Leipzig.jpg - File Upload Bot (Magnus Manske)

Theremin by Øivind Lange, Oslo (1930s), Telefunken Volkstrautonium Ela. T42 (c.1933), Hammond BC organ (1938) - Norsk Teknisk Museum.jpg - Clusternote

Aluminum violin, made in Ann Arbor, of Alcoa Aluminum, 1933 -- scroll & pegbox.jpg - Clusternote

Aluminum violin, made in Ann Arbor, of Alcoa Aluminum, 1933 -- f-hole.jpg - Clusternote

Alminum violin -- Label of Aluminum Musical Instrument Co., Ann Arbor, Michigan -- dated 1933 (Label is inside the violin).jpg - Clusternote

Aluminum violin, made in Ann Arbor, of Alcoa Aluminum, 1933 -- closeup of body.jpg - Clusternote

Aluminum violin, made in Ann Arbor, of Alcoa Aluminum, 1933.jpg - Clusternote

Andy Jackson D'Angelico 1034.jpg - Thatrhythmman

Diller practice keyboard.jpg - Tylwyth Eldar