Mr. Ball. Have you been janitor ever since you were employed?
Mr. Piper. Yes, sir.
Mr. Ball. Did you ever know a fellow named Lee Oswald, that worked there?
Mr. Piper. Yes, sir; I know of him.
Mr. Ball. You knew of him?
Mr. Piper. Yes.
Mr. Ball. Did you know him personally?
Mr. Piper. No, sir.
Mr. Ball. Did you ever talk to him?
Mr. Piper. No, sir.