RT @C_H_Gibson: My article on women's cartographic work in imperial #Russia is online now in the Journal of Historical Geography @historica…
4,934 followers
1,676 followers
RT @C_H_Gibson: My article on women's cartographic work in imperial #Russia is online now in the Journal of Historical Geography @historica…
672 followers
RT @C_H_Gibson: My article on women's cartographic work in imperial #Russia is online now in the Journal of Historical Geography @historica…
300 followers
In the grainy photo the light above the standing man shows a common method of adjusting the height of the lamp. The weight was a ceramic egg with space for lead shot to balance the bulb weight. Wire friction stopped them sliding. They can still be found in