İlk radiostansiyanın fəaliyyətə başlaması münasibətilə Ə. Topçubaşovun təbrik məktubu. 1919, 28 noyabr

Image of Alimardan bey Topchubashov's congratulatory letter of 28 November 1919 marking the launch of the first radio station.

A document image from the Azerbaijan Presidential Library's ADR portal. In the letter dated 28 November 1919, Alimardan bey Topchubashov congratulates the launch of the country's first radio station. The item serves as background material for the collection, documenting state-building and communications infrastructure in the Azerbaijan Democratic Republic after the Caucasus Islamic Army's 1918 campaign.