Anyone familiar with Lawrence King publishers will know they have some very cool creative making books like this book on packaging which comes with downloadable pdfs. http://www.laurenceking.com/en/structural-packaging-design-your-own-boxes-and-3d-forms/
However I have come across this book in PDF format https://issuu.com/designpackaging/docs/packaging-dielines-free-book-design with PDF’s that are downloadable and customisable in your chosen CAD platform.
Foe anyone that is interested, enjoy.
Cheers