The book "Yrjö Aukusti Vallin and his journey to Arabia" is the work of the Finnish writer Julius Kron. This book reproduces the story of the life and activities of Jrjo Aukusti Vallin - a Finnish missionary and scientist who devoted many years to the study of the peoples and languages of the East. The author describes Wallin's travels in Arabia, his meetings with local residents, studying their culture and language. This book is a fascinating narrative of commitment, exploration, and cross-cultural communication that changes the world and opens up new horizons of understanding.