The researchers of the “Saraishyq” State Historical and Cultural Museum-Reserve, in accordance with the calendar plan of the 2023–2025 program of the Committee of Culture of the Ministry of Culture and Information of the Republic of Kazakhstan, titled “The Golden Horde cities of Saraishyq, Ushkan, Ashyssay, and Karagayly in the Context of Historical and Cultural Heritage (XIII–XV cc.)”, have started their scientific research at the State Archive of the Russian Federation and at the Saint Petersburg Branch of the Archive of the Russian Academy of Sciences (Saint Petersburg, Russian Federation).