The Lockheed Model 10 Electra is an American twin-engined, all-metal monoplane airliner developed by the Lockheed Aircraft Corporation, which was produced primarily in the 1930s to compete with the Boeing 247 and Douglas DC-2. From Wikipedia
A $500,000 credit line from Purdue’s research foundation will support a five-day November mission to unearth the buried object in Nikumaroro’s lagoon.