26-G-5024
Original caption: Coast Guard ‘Copter Scouts for Leads. From the deck of the Coast Guard Icebreaker Northwind, the ship’s helicopter takes off, to look for the “leads” in the ice packs, into which the super ice crusher can smash her way, opening a passage for the thin-hulled vessels of the Byrd Antarctic Expedition. Here the Northwind is followed by the Merrick, Yancey, and the Mt. Olympus. The ‘copter proved of special value, being able to hover and study ice conditions for the benefit of the Northwind’s skipper.” 1/1/1947 NARA 26-G-5024