Human creativity and belief systems.
You might wonder why we stopped at 65. While DK has published over 500 non-fiction titles, only 65 strictly fit the definition of a "Visual Encyclopedia" (comprehensive, A-Z or thematic arrangement, expert reviewed, and cross-referenced index). 65 DK Encyclopedia Books Published By DK -VERIFIED-
Omitting activity books, travel guides, and cookbooks, this list of 65 DK Encyclopedia books published by DK -VERIFIED- represents the complete core reference library. If you own these 65 books, you own a physical duplicate of the world’s verified knowledge, from the Hadron Collider to the tomb of Tutankhamun. Human creativity and belief systems
For the mechanically minded.