Thought you guys might enjoy this:
A few weeks ago I was visiting the Victoria and Albert museum - the'V&A' - in London. It's London's major museum dedicated to art and design. They have a small architecture department, and in it I found this amazing isometric cutaway. That's my 14 year old daughter for scale. This is NOT an enlarged reproduction, this is the original drawing! I think the overall size is around 12' x 8'.
It was drawn by Godfrey Allen and R B Brook Greaves and took five years for the two men and a couple of assistants to complete (1923 - 1928).
The green boxes show the approximate areas of the close up images. Apologies for the poor quality, I only had my phone camera and it was a rather dimly light area.
Mike