BUILDER OF TOMORROWS by HELEN M. FESSENDEN. Firat published in New York 1940. FOREWORD: To THE WORLD of Today and the World of Tomorrow, worlds alike benefited and enriched by the life of Reginald A. Fessenden, I give the man himself. That the mind which conceived the correct theory of wireless transmission, which invented the Wireless Telephone and with it accomplished the first Broadcasting, which invented and developed the Fathometer and all it...