An investigation of appellant's alleged bookmaking activities led to the issuance of a search warrant for appellant's home. Under authority of this warrant, federal and state agents secured entrance. They found very little evidence of bookmaking activity, but while looking through a desk drawer in an upstairs bedroom, one of the federal agents, accompanied by a state officer, found three reels of eight-millimeter film. Using a projector and screen found in an upstairs living room, they viewed the films. The state officer concluded that they were obscene and seized them. Since a further examination of the bedroom indicated that appellant occupied it, he was charged with possession of obscene matter and placed under arrest. He was later indicted for "knowingly hav[ing] possession of . . . obscene matter" in violation of Georgia law.^[1] Appellant *559 was tried before a jury and convicted. The Supreme Court of Georgia affirmed. Stanley v. State, 224 Ga. 259, 161 S. E. 2d 309 (1968). We noted probable jurisdiction of an appeal brought under 28 U. S. C. § 1257 (2). 393 U. S. 819 (1968).