This artbook compiles 203 illustrations for non-UC Gundam shows, going from G Gundam to Gundam 00. Theseillustrations were originally published in the magazine Newtype between 1994 and 2009.
It also includes interviews with 16 staff members who worked on the shows featured in this book.

Is there an equivalent for UC gundams? Thanks for the upload.

Base +4

There is indeed a UC Gundam equivalent. I have uploaded scans of it here: https://e-hentai.org/g/3755856/e1a6e1dd18/

Base +6