Everybody did. “They were in fact, the early Twitter,” said Robert Stoldal, 80, a Las Vegas historian and former journalist whose collection numbers about 15,000 postcards.

Roughly a quarter of the postcards, posters and banners sent to Las Vegas from classrooms, congregations and countries following the Oct. 1 mass shooting on the Strip are part of an exhibition on ...

LAS VEGAS, NV - MARCH 26: A view of the Las Vegas Strip seen before Earth Hour from the House of Blues Foundation Room inside the Mandalay Bay Resort & Casino March 26, 2011 in Las Vegas, Nevada.

Following the exhilarating Sept. 29 launch of Sphere with U2’s residency, on Friday, filmmaker Darren Aronofsky ‘s transportive Postcard from Earth became the first movie to premiere at the ...