‘observation’ historical pictures (exact matches)

Discovering Our Cities: The Marvel of the Mersey (Liverpool). Jeremiah Horrocks.
Discovering Our Cities: The Marvel of the Mersey (Liverpool). Jeremiah Horrocks.
Il Presidente della Repubblica Francese alla fronte italiana
Il Presidente della Repubblica Francese alla fronte italiana
Percival Lowell
Percival Lowell
Claudius Ptolemy, Greco-Roman astronomer and mathematician and geographer
Claudius Ptolemy, Greco-Roman astronomer and mathematician and geographer
In 1911, Lt Giulip Gavotti became the first man to drop a bomb from a plane
In 1911, Lt Giulip Gavotti became the first man to drop a bomb from a plane
Observation balloon ascending, World War I
Observation balloon ascending, World War I
Ornatus Muliebris Anglicanus (The Clothing of English Women)
Ornatus Muliebris Anglicanus (The Clothing of English Women)
Le futur Peintre de nature morte
Le futur Peintre de nature morte