Please share it with us.
Probably a Lockheed Model 10-B Electra c/n 1049.
Apparently impressed into the USAAF as 42-57219 in 1942, back to NC14990 in 1944, then to N229M. WFU 1966.
Look at the following link for a possible photo:
http://www.edcoatescollection.com/ac3/Airline/Delta%20Air%20Lines%20Lockheed%2010-B.html
Best regards
Bob
