I got a similar one! I was working on an assignment about my village's church, it was undergoing restorations so I mailed the architect askingif maybe he could send me a pic of the inside of the roof. He invited me to his home, showed me his plans, told me a lot about his work, and gave me a shit ton of documentation. That was so kind of him I was (and am still) really touched.
He showed it to Obama