In June, 1924, a brief note told of his departure for Paris, to which he had before made one or two flying trips for material in the Bibliothèque Nationale. For three months thereafter he sent only post-cards, giving an address in the Rue St. Jacques and referring to a special search among rare manuscripts in the library of an unnamed private collector. He avoided acquaintances, and no tourists brought back reports of having seen him. Then came a silence, and in October the Wards received a picture card from Prague, stating that Charles was in that ancient town for the purpose of conferring with a certain very aged man supposed to be the last living possessor of some very curious mediaeval information. He gave an address in the Neustadt, and announced no move till the following January, when he dropped several cards from Vienna telling of his passage through that city on the way toward a more easterly region whither one of his correspondents and fellow-delvers into the occult had invited him.