These are definitely the primary two publications for your "Moderný Pračlovek" series (Modern-day Caveman). The main idea was to symbolize caveman drawings in the very simple way and items that ended up applied At the moment... and also in our times. The first just one — “Kuchyňa Pračloveka” (Caveman's Kitchen) https://maplepublishers.com/blog/why-opt-for-self-publishing-is-it-only-for-creative-independence-or-something-more/