Life Of Siberian Reindeer Herders, Yamal, Russia.

The use of reindeer as semi-domesticated livestock in Alaska was introduced in the late 19th century by the U.S. Revenue Cutter Service, with assistance from Sheldon Jackson, as a means of providing a livelihood for Native peoples there. Reindeer were imported first from Siberia, and later also from Norway. A regular mail run in Wales, Alaska, used a sleigh drawn by reindeer. In Alaska, reindeer herders use satellite telemetry to track their herds, using online maps and databases to chart the herd's progress.
Economy
The reindeer has (or has had) an important economic role for all circumpolar peoples, including the Saami, Nenets, Khants, Evenks, Yukaghirs, Chukchi, and Koryaks in Eurasia. It is believed that domestication started between the Bronze and Iron Ages. Siberian deer owners also use the reindeer to ride on (Siberian reindeer are larger than their Scandinavian relatives). For breeders, a single owner may own hundreds or even thousands of animals. The numbers of Russian herders have been drastically reduced since the fall of the Soviet Union. The fur and meat is sold, which is an important source of income. Reindeer were introduced into Alaska near the end of the 19th century; they interbreed with native caribou subspecies there. Reindeer herders on the Seward Peninsula have experienced significant losses to their herds from animals (such as wolves) following the wild caribou during their migrations.