The tunnel thru the air : $b or, Looking back from 1940

by William D. (William Delbert) Gann

"The Tunnel Thru the Air, Or, Looking Back from 1940" by William Delbert Gann is a science fiction novel written in 1927. The author claimed the book contains a "valuable secret, clothed in veiled language," which some traders believe encodes financial astrology techniques. The story follows Robert Gordon from his birth in 1906 through a lost love that drives him to become history's greatest inventor, culminating in an imaginary war from 1930 to 1932 where his inventions help America triumph.