King Ferd. whispers to Prince Boris

Photo shows Ferdinand I, Czar of Bulgaria, and his son Prince Boris, probably near Adrianople during First Balkan War. (Source: Flickr Commons project, 2008, and Bain negative LC-B2-2483-14)
Title from negative.
Forms part of: George Grantham Bain Collection (Library of Congress).
General information about the George Grantham Bain Collection is available at http://hdl.loc.gov/loc.pnp/pp.ggbain
Additional information about this photograph might be available through the Flickr Commons project at library_of_congress/2515739919