Question: The first director of NASA's Manned Spacecraft Center sent a letter of receipt to the person who knit a sweater for what famous astronaut?
Sentence (from "Robert R. Gilruth"): Robert Rowe Gilruth (October 8, 1913 – August 17, 2000) was an American aerospace engineer and an aviation/space pioneer who was the first director of NASA's Manned Spacecraft Center, later renamed the Lyndon B. Johnson Space Center.
Relevant evidence: Yes