Observatoire de Brera, Milan [Italie]. Liaison radio. (titre forgé)

Observatoire de Brera, Milan [Italie]. Récepteur radio et chronographe. (titre forgé)

R.S. Newall’s Telescope (titre original)

The Great Equatorial Telescope of Lick Observatory (titre original)

Side View of driving clock of astro-photo Telescope at Sydney (titre original)

Front View of driving clock of astro-photo Telescope at Sydney (titre original)

Observatoire du Cap. Zenith telescope in process of reversion (titre original)

Lick Observatory, North End Dome [12 inch Telescope] (titre original)

Lick Observatory, Cal. : the great 36-inch telescope (titre original)

Photograph of the astro-photo telescope at Sydney in temporary building [January 1891] (titre original)

Observatoire de Rio de Janeiro : Time-keepers ; Meridian Circle by G. Heyde ; Maincka Sismograph [400 kgs] ; Central Office ; General view of the Observatory grounds ; equatorial telescope 32 cm by Cooke [focal length 467 cm] ; Zenith Telescop […] & Instrument of variation of latitude ; Astrographical Casmeras of the Great refractor Cooke (titre original)