This high quality photo of the main street in Donegal town was taken around 1890 by photographer Robert French which formed part of the Lawrence collection. It shows the main street, gas lamps and weight bridge on the diamond.
The lawyer, Anatoly Kucherena, said he had received the necessary papers to enter Russian territory from the transit zone at Sheremetyevo Airport.
Unconfirmed reports say he has been granted temporary asylum in Russia.
The US has charged Mr Snowden with leaking details of its electronic surveillance programmes.