Mr Grosvenor, you and your wife visited my father in his office at the NY Worlds’ Fair in 1939. What did you talk about? Did you try out all the exhibits in the AT&T building? Did you have a winning number in the lottery which let you make a free phone call? Did you ask the Voder questions? I wonder if it could say “National Geographic Magazine” or “Welcome Mr Gilbert Grosvenor.”
I have a photograph of you three together. But I never asked my father what you talked about, or what he showed you of the exhibit he managed. If he had a Voder in his office, he could have showed you how it worked.
And did you ever have an article about the Voder in your magazine? I have boxes of them from 1926 to about 1960, so perhaps I should get out the 1939/40 ones and have a look. Google hasn’t come up with anything.
Or maybe I can find details of your trip to NYC and the 1939 Worlds’ Fair in the National Geographic Archives. Put that trip on my itinerary; I need to visit you.