From Those Were The Days… currently on eBay is a truly impressive piece:

Douglas Aircraft Co 1960’s Skeletal Wood Model of the C-5 Cargo Proposal LARGE

The Buy-It-Now price is a substantial fifteen grand. It shows the internal structure of the Douglas proposal of the CX-HLS, what became the C-5, at fairly large scale. More pics after the break.

Computer graphics are great. But they would not compare to seeing something like this set up as part of a sales display. Of course, you can’t exactly email this thing as a PDF…