EditorialFlying device in which de Groof died on July 9, 1874, Aircraft of Vincent de Groof, with whom he died in a fatal accident on July 5, 1874, Signed: A.T, Fig. 6, XXI, Tissandier, Albert (del.), 1887, Gaston Tissandier: Histoire de mes ascensions. R?cit d...
Editorial... or that de Groof had detached himself from the balloon too hastily, or that his machine was really powerless to support him, he fell like a mass, Crash of Vincent de Groof with an aircraft on July 9, 1874, Signed: Trichon, Fig. 73, p. 433, Trichon,...