Early on he seemed to borrow from the ideas of Mahlon Loomis, W. Bernard Carlson, Tesla: Inventor of the Electrical Age, Princeton University Press - 2013, page H-45 Marc J. Seifer, Wizard: The Life and Times of Nikola Tesla : Biography of a Genius, Citadel Press - 1996, page 107 proposing a system composed of balloons to suspend transmitting and receiving electrodes in the air above 30000 feet in altitude, where he thought the pressure would allow him to send high voltages (millions of volts) long distances.