The National Geographic Magazine. June 1930

Toscanini, Verdi: "La Traviata" Prelude to Act 1 and 3 with New York Ph.

Graf Zeppelin von LZ 1 bis LZ 127

Voices of the Past. Vol. 9 The HMV French Catalogue 1899-1925

『第三帝国のオーケストラ』

Das deutsche Luftschiff seine Geschichte, Einrichtungen und Fahrten

『飛行船時代』

ツェ伯号世界一周　日本発　夕食献立表オリヂナル

Bagshaw's "Brilliantone" Needles Exrtra Laud Tone

Jane's Pocket book 7 "Airship Development"

Toscanini, Verdi: "La Traviata" Prelude to Act 1 and 3 with NB.C S. O.

The Story of the Airship

kaffeekanne Zeppelin

The stubborn Dirigible

Pfanstiehl Phonograph Needles

『飛行船帝国』

Walter, Wagner: "Die Walküre" Act I

Troubadour Semi-Permanent Gramophone Needles

月刊誌『科學知識』昭和五年四月號

Ondulette Electro Sortiment Nadeln Dose

Million Dollar Popular Steel Needles case