They're the very first two publications to the "Fashionableý Pračlovek" collection (Fashionable Caveman). The main thought was to depict caveman drawings in the very simple way and products that ended up utilised at that time... but also within our days. The main a single — “Kuchyňa Pračloveka” (Caveman's Kitchen area) https://maplepublishers.com/self-published-authors