Out of curiosity, how do you know these are actually signed by the person in the mascot costume and not say, someone who answers or collects and distributes the mail?
Space enthusiast w/a Sharpie! Ex-journalist. Published in British Interplanetary Society's Spaceflight and National Geographic Traveler magazines; also NASA's Scientist-Astronauts, Freedom 7: The Historic Flight of Alan B. Shepard books and contributor to The Star Trek Encyclopedia: A Reference Guide to the Future and the A Matter of Time: The Unauthorized Back to the Future Lexicon among others. Follow me at @HBSastrowardoyo, check out my astronaut and other space travelers autograph collection at https://www.flickr.com/photos/45855752@ ... 973452526/