05/23/1951
https://www.presidency.ucsb.edu...
"I also extend the welcome of this Government to the Congress and to the scientists attending its proceedings, and I request that all Federal departments and agencies assist and cooperate with the Worl..."
"No, I will not. That is an educational meeting."
"Oh, yes. It will contain everything."
"Not ready yet. As soon as I am ready, why I will let you know."