These are definitely the first two publications to the "Modern dayý Pračlovek" series (Present day Caveman). The main concept was to depict caveman drawings within a quite simple way and products which were used at that time... but also within our days. The first a person — “Kuchyňa Pračloveka” (Caveman's https://maplepublishers.com/blog/what-services-do-london-self-book-publishers-provide-to-authors/