and its designer and engineer Erwin Aebersold (clic on the name) click on following link to see the film : Disappearance of the PX-15 "The PX-15 Ben Franklin... and its engineer Erwin Aebersold"...
click on following link to see the film : Disappearance of the PX-15 "The PX-15 Ben Franklin... and its engineer Erwin Aebersold"...