They are the main two publications for the "Modern dayý Pračlovek" collection (Modern day Caveman). The key thought was to stand for caveman drawings in a very simple way and products which were applied at that time... but additionally in our days. The primary one — “Kuchyňa Pračloveka” (Caveman's Kitchen) https://maplepublishers.com/blog/how-do-self-publishing-debutant-writers-get-support-from-maple-publishing/