For the Melancholy Time Traveler: “Holiday: The Best Travel Magazine That Ever Was” (Rizzoli, $85) — full of socialites, periodicals and midcentury intellectuals — can feel like an elegy for a lost America, the magazine business itself, the days of public smoking. It’s also a salute to a magazine that, in the decades after World War II, implored Americans to see the world not as full of experiences. It landed Joan Didion and E.B. White, photographers Robert Capa and Henri Cartier-Bresson. It covered the exotic voyage and staycation alike. This giant engrossing book doubles nearly as a portrait of a nation discovering itself. The same is largely true of “Midcentury Memories: The Anonymous Project” (Taschen, $60) , which takes candid, amateur photos of everyday life from the postwar era and, without identifying places or names (hence the title), delivers a cradle-to-the-grave study of ordinary (albeit mostly white) people, as seen at backyard pools, on prom night, watching TV and attending funerals.