PECULIARITIES OF STUDYING THE PHOTO DOCUMENTS OF THE HISTORY OF RUSSIA OF THE SECOND HALF OF THE XIXTH CENTURY
The article deals with the issue of the small interest of the researches in the use of the sources of the visual type as individual in the line with their massiveness. On the basis of the generally available material (web-reproduction of photo documents) there are revealed the peculiarities of the photo document basis of the second half of the XIXth century, making the photosources, on the one hand, unique by the present information, on the other hand, complicated for the research work.