Greetings_37 Posted on 11/11/202111/11/2021 #20-938-254 #37 Résolution des quatre principaux problèmes d’architecture, François Blondel. The first page I chose, shows how the author divided the book into 4 chapters. Blondel explains in each chapter one of these 4 problems of architecture. The second page shows drawings of a sail from different point of views. (The first two pictures were taken at the library and the second ones are digital.) Our book is rather big, look at the hand as comparison. The book cover is made out of leather wich indicates that it’s very old and probably handcrafted. It’s nice how you can see the natural aging of leather and how it’s rapped around the spine of the book.