McDonnell Douglas Commuter concept

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Artist's impression of McDonnell Douglas Commuter concept by Dave Beigle.

Source:
http://www.dave-beigle-art-enterprises.com/aviation-artwork-memorabilia/

 

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Source:
http://www.dave-beigle-art-enterprises.com/aviation-artwork-memorabilia/

 

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Anyone recognize these concepts?

 

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Anyone recognize these concepts?

The second one looks like the artists' renderings I've seen of a proposed DC-10 twin. There's a picture at http://widebodyaircraft.nl/chro1971.htm for comparison.

Would have been interesting to see how it would have stacked up against the A300.