Grating spectrometer, 1882-1905.

Snoopy and Charlie Brown, 1969.

Front page of the New York Herald, 16 June 1919.

Alcock and Brown leaving Euston, London, 1919.

'The Lines Test-Box', 1890s.

'Horses drinking at pond', c 1890s.

'Pisa, The Leaning Tower, eastern extremity of Cathedral', 25 June 1841.

'Rome, View from the Pavilion in the Orti Farnesi...', 1841.

'Rome. View from the Pincio...', 1841.

'Pisa, The Cathedral from the North West', 25 June 1841.

'Naples, View from the North window...', 1841.

'Pisa, The Leaning Tower, from the gras plot, West of the Tower', 25 June 1841.