Mr. Ofstein. He asked me one day if I knew the term "microdot", and I told him, "no", I wasn't familiar with it and he told me that that was the method of taking a large area of type or a picture and reducing it down to an extremely small size for condensing and for purposes, such as where you had a lot of type to photograph to confine them into a small area, and he said that that is the way spies sometimes sent messages and pictures of diagrams and so on, was to take a microdot photograph of it and place it under a stamp and send it. I presumed that he had either read this in a book or had some knowledge of it from somewhere, but where, I didn't know.
Mr. Jenner. When did this conversation occur with respect to the termination of his employment?
Mr. Ofstein. This was possibly 2 or 3 months before.
Mr. Jenner. So, this was after the time that the Russian newspaper had shown up?
Mr. Ofstein. I believe it was; yes, sir.
Mr. Jenner. Was it after the time you learned that he married a Russian girl and brought her to this country?
Mr. Ofstein. No, sir.
Mr. Jenner. That occurred afterwards?
Mr. Ofstein. Yes, sir.
Mr. Jenner. What reaction did you have when Oswald talked about—raised the subject of microdots and their use or possible use in espionage?