The layout of the tram line along the abstract bridge (now the fortress bridge) dated 02/27/1923.Blue.Scale 1: 200

The layout of the tram line along the abstract bridge (now the fortress bridge) dated 02/27/1923.Blue.Scale 1: 200.- 1923. -Foundation 531 "A collection of maps, plans and drawings of Vyborg, Vyborg, Mikkel and Coopiosa provinces" , inventory 1, case 431..Electronic copy source: PB