Firstly, I took those three spreads, because they are all about the same theme: Ionic columns
In the book there are mostly drawings and nearly no text. On one page there is the drawing and on the other is a “clear” page, I guess there is one because of the ink. The pages are located in the middle of the book.
On the first page there is like an instruction how a column was designed and a sequence of how the base shaft and capital was drawn. On the next page there is a big sketch of a volute and of an entablature. At the last page are columns, where a “person” is a column.