Balloons, Airships, and Flying Machines by Gertrude Bacon
http://www.gutenberg.org/ebooks/54799
A short book, written in 1905, as part of the "Practical Science Series". Most of the book deals with balloons, with a chapter on airships (zeppelins/blimps) and "flying machines" AKA airplanes, including mention of the Wright brothers' flight that had happened less than 2 years before publication of this book.