>> garrison announced he had discovered a code. >> he said jack ruby's unlisted telephone number appears in address books belonging to shaw and oswald. >> you take p and o and use a telephone dial, p gives you 7, o gives you 6. >> he just changed the digits around, added digits, added letters. >> you reconstruct the numbers, and then you subtract 1300 and that gives you ruby's unlisted telephone number. >> mr. garrison, if the p.o. didn't exist until later how would it be his phone number? >> he pointed to cia agents supporting a conspiracy. >> who's suppressing this on whose order? >> the federal government is suppressing it. >> who in the federal government? >> the administration. the administration of your government is suppressing it because they know that the central intelligence agency -- >> on whose order? >> on the order of the president