Happy Days is a wonderful book full of fun and optimism, written by Oliver Herford and John Cecil Clay. In this book you will find many funny and interesting stories that will tell you about joyful moments in life, about friendship, love and adventures. Among other things, the authors skillfully use humor and lightness of the pen to convey to readers the happiness and joy of reading each page. "Happy Days" is a book that will inspire you with positive emotions and help you look at the world with a smile on your face.