Complex sentence: The island was mapped from air photographs taken by U.S. Navy Operation Highjump, 1946--47, and was named by Carl R. Eklund for Billie R. Lilienthal, U.S. Navy, aerographer at Wilkes Station, 1957.
Split into simpler sentences: The island was mapped from air photographs taken by U.S. Navy Operation Highjump, 1946-47. Named by Carl R. Eklund for Billie R. Lilienthal, U.S. Navy, aerographer at Wilkes Station, 1957.