3D extrapolation created after illustration *B 11a.* «INTERLOCKED OCTAGONS WITH CENTERED SQUARES — Chengtu, Szechwan, 1800 A.D.» , chapter «B: OCTAGON OR OCTAGON-SQUARE» from the «[Chinese Lattice Designs](https://store.doverpublications.com/0486230961.html)» reference book by Daniel Sheets Dye (p. [60](https://books.google.fr/books?id=SsZLhrgEwUwC&pg=PA60)).
Reference picture from the book:
[![](https://web.archive.org/web/20210525023047im_/http://teacherlink.ed.usu.edu/yetcres/clipart/MasterClipsDOV/Symbols/Designs2/thumbnails/CLD060C.jpg)](https://web.archive.org/web/20210525023047/http://teacherlink.ed.usu.edu/yetcres/clipart/MasterClipsDOV/Symbols/Designs2/index_10.htm)
Pattern also listed here:
[![](https://web.archive.org/web/20210528043631im_/http://tilingsearch.org/contents/data22/B11A.gif)](http://tilingsearch.org/HTML/data22/B11A.html)