Those cutaway illustrations had a marked effect on my life. I cut them out and pasted them in a 'long thin' scrap book.
After finishing an aircraft apprentership, I went to London, and took a course in Technical Illustration, got myself a job with an agency, and spent many years doing engineering cutaway's and exploded illustrations, and all sorts of 3D models. There was a spell working for the Admiralty. How about an illustration of a gun, a cut away showing the turret and shell delivery system (sorry cannot remember the size) but was drawn up on a roll of linen backed paper that was eight feet wide. the gun drawn in Indian ink and then coloured. To be used a a teaching aid.
Or working for the I.W.M. Duxford. A whole wall full of American WW.II squadron badges in colour, each about two feet square, back lit transparency's, all hand drawn on one side and coloured an the other, I think there were 58 of them.
Good days.
(I have just ordered the Eagle book of cutaways, thanks for the tip)
Colin