The following affidavit was executed by Mack Osborne on May 18, 1964.
AFFIDAVIT
PRESIDENT'S COMMISSION
ON THE ASSASSINATION OF
PRESIDENT JOHN F. KENNEDY
State of Texas
County of Lubbock, ss:
I, Mack Osborne, 2816 43rd Street, Lubbock, Texas, being first duly sworn, depose and say:
That while I was in the United States Marine Corps, I served in Marine Air Control Squadron 9 in Santa Ana, California, with Lee Harvey Oswald. Prior to his discharge, I shared a room with him.
Oswald was at that time studying Russian. He spent a great deal of his free time reading papers printed in Russian—which I believe he bought in Los Angeles—with the aid of a Russian-English dictionary. I believe he also had some books written in Russian, although I do not remember their names.
I once asked Oswald why he did not go out in the evening like the other men. He replied that he was saving his money, making some statement to the effect that one day he would do something which would make him famous. In retrospect, it is my belief—although he said nothing to this effect—that he had his trip to Russia in mind when he made this statement.
Although Oswald did not directly talk back to his superiors, he did the tasks assigned him poorly and complained about them to his fellow Marines.
My recollection is that Oswald was a radar operator of average ability. Although he was personally clean, he scored quite poorly on barracks inspections.