2962405 L\'ignorance Prouvee. Ou les evenements de la journee du 11 juillet 1784 au Luxembourg. Pub. In France 1784 ( hand coloured engraving) by French School, (18th century); Private Collection; (add.info.: shows failed atempt of Abbe Miollan and Janinet to ascend in a hot air balloon on July 11, 1784 at the Luxembourg Gardens in Paris;); The Stapleton Collection; French, out of copyright.