Like the fossilized mosquito in Jurassic Park, these scraps of cultural ephemera hold the DNA of a lost world. From them I can extract and return from extinction a long-ago living room, with its red carpet and exposed-brick chimney. These drops of preserved time are generous, containing in miniature a thousand blueprints for memories: a suburban swimming pool sealed up for the winter, along with school friends’ train-track smiles, a history project on George Washington, neon highlighters, sour candies in the shape of keys fizzing on the tongue, social anxieties and family worries, the touch of a cousin’s warm, bald head, the starship Enterprise hanging among the stars (shot from below), the white noise of space.