This book, titled "100 Blackboard Games", written by Leslie Landin, is a great addition to any game enthusiast's collection.

The book contains 26 pages of fun games to play on a blackboard, perfect for a classroom or family game night. The format of the book is paperback, making it easy to carry around and share with others.

Additionally, the book is written in English and was published in 1956, giving it a vintage feel. The author, Leslie Landin, has put together a collection of games that are not only entertaining but also educational.