Картинка анонс: https://archive.rzd-museum.ru/storage/files/exhibit/7293/900_685e1aea923f73a2909a00d5ddafc8aa0729ad3a.jpg
Галерея фото: https://archive.rzd-museum.ru/storage/files/exhibit/7293/4096_685e1aea923f73a2909a00d5ddafc8aa0729ad3a.jpg
Характеристики: A-3813 / 1986-01-01 / Central State Historical Archive of the USSR. City of Leningrad. / 1844–1847. / The Tsarskoye Selo Railway. / Photo courtesy of the Central State Historical Archive. / Negatives.
Mnemonic code: ob-elektromagnitnom-telegrafe-1844-1947-gg-7293
Name: Об электромагнитном телеграфе. 1844–1947 гг.