This is the first part of the two volume work Die ungarischen Ruthenen ihr Wohngebiet, written by Austrian statistician Hermann Ignaz Bidermann [1831-1892], which may be considered the first scientific ethnographic study of so-called “Hungarian Ruthenians” also known as Uhro-Rusyns, which was a historical term for the Carpatho-Rusyn people who came from the lands under the Hungarian crown.