I had no idea

Driving Tour: Northwest Washington @ nationalgeographic.com:

National Geographic Society (17th and M Sts. N.W. +1 202 857 7588). Brainchild of respected Washington lawyer and financier Gardiner Greene Hubbard, the Society was founded in 1888. Its 33 original members included prominent explorers and scientists, many affiliated with Washington’s distinguished Cosmos Club. In the 1890s Alexander Graham Bell, Hubbard’s son-in-law, took the helm of the organization and opened membership to anyone interested in “a society for the increase and diffusion of geographical knowledge.” Bell, too, passed the reins to his son-in-law, Gilbert Grosvenor, under whose editorship National Geographic magazine became a unique part of the American journalistic landscape.

Odd that I've belonged multiple times, and enjoyed their magazines, documentaries, TV channel, and more and had no idea that Alexander Graham Bell was involved, even though I had read a thorough biography of his when I was younger.