Photographer: Fedorov N. V. Annotations on envelope: ¹6923 pl. - Proseka telegrafa na Usinskoi trope Zacherknuto: otd. VII ¹48 kor. 187. Annotations on negative: N/A. Additional observations: na negative: ¹6923 zacherknuto: VII -48. Condition of original: horoshee, emul'siia otslaivaetsya, 2 negativa. Date: 1912.