Booklets:
1890, Italian edition, 18 pages, written by ???, 3 illustrations
1890, German edition, 15 pages, written by ???, 3 illustrations
the “Beduinenlager in Deutschland” is likely the same as the “Beduinenlager in Deutschland” and the “Caravane Egyptienne”.
CDVs:
possibly a photo of this group by Italian photographer A. Noack from Genoa: