par L.H. Vincent ; E.J.H. Mackay ; avec la collaboration de F.M. Abel., Main Heritage Shelves General, DS110.H4 V56 1923, Book, Item-ID: i15641181, BIB-ID: 2622136, Includes bibliographical references.
by Harold F. Jacob ; With forty-two illustrations., Main Heritage Shelves General, DS243 .J33 1923, Book, Item-ID: i10119644, BIB-ID: 1013600, Bibliography: p. 19.