Two P2V Neptune and two R5D Skymaster aircraft of VX-6 , aka the Puckered Penguins, completed the first air transportation link with Antarctica by establishing a route between Christchurch, New Zealand and McMurdo Naval Air Facility, Antarctica on 20 December 1955.
This link by naval aviation was vital in Operation Deep Freeze I, which would prepare a permanent research station and pave the way for more exhaustive research in later Deep Freeze operations. The expedition transpired over the Antarctic summer of November 1955 to April 1956.
Here is another VX-6 unofficial site here...
Here is simulated flyover of McMurdo in Antarctica...