Tunnel Thru the Air Or Looking Back from 1940

This book has a threefold purpose: first, it is an interesting romance. Second, it teaches a moral lesson and proves the natural laws laid down in the Bible. Third, it shows the value of science, foreknowledge and preparedness. This work is mysterious and contains a valuable secret, clothed in veiled language. Some will find it the first time they read it, others will see it in the second reading, but the greatest number will find the hidden secret when they read it the third time.