The volume is dedicated to the one hundred years since Guglielmo Marconi was awarded the Nobel Prize (1909). The choice of honoring Marconi in this centennial occasion stems from the huge impact that wireless communications had on society. The book is divided into four parts covering the life of Marconi and his environment up to the Nobel Prize: "Part I – Documents," comprehends four contributions tightly linked to the Nobel Prize awarding to Marconi in 1909. "Part II - Marconi road to the Nobel Prize," proposes some deepening on the work of Marconi before his Nobel Prize, relevant to his scientific education and to particular and not well known events in the years of his first experiments. "Part III - Marconi's contemporary and later related scientists," presents Ferdinand Braun, who shared the Nobel Prize with Marconi, as well as other scientists related to wireless communications. "Part IV - Devices and collections in Sweden and Italy," shows a selection of the cultural heritage, Italian and Swedish, about the history of telecommunications engineering. The book presents several images and illustrations, some of which published here for the first time.