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Klangfilm-Reporter-Apparatur [WITH] Tonfilm-Aufnahme U. Wiedergabe Nach Dem Klangfilmverfahren
Berlin: Siemens & Halske AG Wernerwerk, 1931. First edition. Softcover. Large Quarto. 6pp., 8 photos, 8pp., 4 photos, 7 tech. drawings, 4 of them foldouts. Original green track folder with handwritten lettering on cover holding cyanotype block. This incredibly scarce peice is a description and operating manual for the "Klangfilm"..... More