Notes

48 p ill. (chiefly col.) Table of contents includes: Transport with legs -- Sleds, skis and skates -- Inventing the wheel -- Spinning pedals -- Iron horse -- Buses, subways and trams -- They'll frighten the horses -- Motor cars and traffic jams -- Wet and wild journeys -- Masts and yards -- Salt-caked smokestacks -- Floating cities -- Lighter than air -- Getting it Wright -- Flying grows up -- A sound idea -- Wild blue yonder -- Is it a boat or a plane? -- Setting the record -- Fantasy or invention? -- What will there be in the future?