[1] The C-2 was a two-bay biplane of unconventional design, with a tall, narrow fuselage that nearly filled the interplane gap.

The pilot (and sometimes one passenger) sat in an open cockpit at the top of the fuselage, with the engine mounted in front of them.

[2] One C-2C, modified from an OL, was flown from New York City to Bergen by Thor Solberg in 1935, the first flight from the United States to Norway.

[3] Solberg christened the aircraft Leiv Eiriksson and used it to roughly re-trace its namesake's journey across the Atlantic (albeit from West-to-East, and by air) via Greenland, Iceland, and the Faroe Islands.

[4] The first commercial flights in Aruba were made in 1934 using a C-2H which had been purchased from Standard Oil in Venezuela.