Journal of the Ministry of Railways, 1902. To the article by engineer A. Legun "Upper Don" No 9
Журнал Министерства путей сообщения, 1902 год. К статье инжинера А. Легуна "Верхний дон" 

Map of the Don region (Voronezh province and the region of the Don Army) scale in English inches 56 1/4 versts.

Autolithography F. Kremer St. Petersburg. Thick paper Size: 43/34 cm. 16.929/13.385 inch. Weight: 14 gr. 0.5 oz.