Help tracking a National Geographic Photographer

Hi, I'm not exactly sure if this is the right subreddit to do this, but I'm running out of options. Here's the thing: I'm tracking information about a late photographer from the mid 20th century, called Fred S. Beal. I've been entrusted by his granddaughter to donate a big set of his pictures to an archive or university, but she doesn't remember much about their grandfather, and I need to gather more information about him in order to give more context to any curator.
What I know:
- Active during the 1940's
- Earned a National Geographic magazine photography prize in the 1940's
- Stationed in Nepal during WWII and took pictures there
- Friends with George Eastman
- One of the first people to use the Kodak Gold film
- Belonged to the Biological Photographic Association (BPA)

If you have any information about him or where to find it, I'd be forever grateful. And his granddaughter too of course!