Greenland III

Postcard showing mail delivery by dog sled, which are still routinely used during the winter in Greenland.

Two stamps from a 2012 set of three on aviation in Greenland. On the left, an S-61 Sikorsky helicopter, the most widely-used civilian transport helicopter. On the right, a DC-6 plane, which was actually featured in a previous post's stamp about air transport in the Antarctic!