From a New York Times online review:
“Envisioning 2001” shows Kubrick as a director in command of all aspects of filmmaking, and it suggests that he and Clarke were no small obsessives when it came to understanding their subject matter. One of the first items in the exhibit is a request form from 1964, with Clarke’s name and address, sent to the United States Air Force. He sought information on a sighting — which turned out to be a satellite — that he and Kubrick, then developing the story for the movie, had seen in the sky over New York.

As it approaches its 52nd birthday, “2001: A Space Odyssey” remains one of the most inventive and enduring of all movies. But from the vantage point of 2020, it can be difficult to appreciate the sheer breadth of imagination involved in its making.
Enter “Envisioning 2001: Stanley Kubrick’s Space Odyssey,” a new exhibit at the Museum of the Moving Image in Astoria, Queens, that runs through July 19. The show brings together original correspondence, sketches, storyboards, props, video clips and much more to illustrate how Kubrick, the film’s director, and Arthur C. Clarke, the science fiction author who collaborated with him on the screenplay, set about bringing the future to the screen.