Hello,
From Longbeach Douglas production list -
construction number: 19976 - C-47A-85-DL
http://www.abcdlist.nl/douglas_longbeach_02.html
This book has a table that gives the a/c "Chalk Number" as being "50".
Also four crew names are given on page 120.
https://books.google.co.uk/books?id=...-15510&f=false
Alex