Cast
Director
Enrico Guazzoni
Luigi Pavese as Antonio Meucci
Leda Gloria as Ester, sua moglie
Nerio Bernardi as Alexander Graham Bell
Greta Gonda as Consuelo Ispahan
Osvaldo Valenti as Giovane Giuseppe Garibaldi
Armando Migliari as Elisha Gray
Rubi D'Alma as Liliana Montes
Emilio Petacci as Sam Cloton
Nino Pavese as Onorevole Closter
Olinto Cristina as Wilson
Nino Marchesini as Il presidente del tribunale
Cesare Fantoni as L'avvocato difensore
Gildo Bocci
Flora Volpini