Elastic spoke wheels...

SCIENTIFIC AMERICAN, New York, April 1, 1911 
This issue contains illustrations, accompanied by text, of the latest inventions of the day including: "Some Early Elastic Spoke Wheels", "Sinking a Battleship at Six Miles", "Record-Breaking Aeroplane Flights in France and America", and "Remarkable Cretan Relics".

This is complete in 16 pages with an archival mend on an inside page, otherwise is in good condition.