This image seems vectorized from the following source:
--Great Brightstar (talk) 03:44, 12 February 2021 (UTC)
Here you can see even more details:
- https://www.worthpoint.com/worthopedia/mcdonnell-douglas-corporation-annual-1930817588
- https://www.ebay.com/itm/114792546087
--Great Brightstar (talk) 21:19, 25 June 2021 (UTC)
