Osservatorio Astronomico dell' Archiginnasio Romano sul Campidoglio. Veduta 2a. nd. [c1855-1878]. Engraving; image 23x17.3cm, platemark 29.5x21.7cm, on sheet 46x33.7cm. Depicting the interior of the observatory, in Rome, Italy, the roof slightly open, a townscape visible beyond; a gentleman and a priest in discussion beside the telescope; ratchet revolving apparatus