All About Airships by Simmonds. Ralph,

Hard back book with colour pictorial cover, 374 pages, 21 chapters illustrated with many good quality B/W plates.

Evidently in 1911 anything that flew or floated was called an airship, because whilst you'd think this book was about airships, most of it concerns aeroplanes. That said, if you want an astonishing amount of detail on the early years of flight, the flyers and their machines, you won't be disappointed.