Back during the days of aboveground nuclear testing, particularly during the Korean War, the U.S. government wanted to be sure troops could operate under threat of nuclear attack. A field exercise known as Desert Rock IV was conducted at the Nevada Test Site during some of the detonations comprising the nuclear test series codenamed Operation Tumbler-Snapper. Thousands of soldiers conducted maneuvers as the blasts occurred, and were exposed to radiation, though the levels were said to be low. This particular photo is from the 20-kiloton airburst codenamed Dog, and shows two soldiers pretending to touch the bomb’s debris cloud. An aerial photo of the blast appears below. That was today in 1952.

Above, a photo of the American nuclear test codenamed Wasp, part of Operation Teapot, detonated at the Nevada Test Site today in 1955  

Above is an image of a downed blimp, or barrage balloon, that was floated above the Nevada Test Site to measure the effects of the pressure wave from a nuclear blast. The test was a nineteen kiloton detonation codenamed Stokes, part of the series Operation Plumbbob, and was set off about five miles away from the blimp. That was today in 1957.

The numbers in reverse on the top photo tell you the date—today, 1955. The occasion was yet another nuclear test in the Nevada desert near Las Vegas, and the image captured the glow that had filtered all the way to downtown Los Angeles, more than 250 miles away. The blast that made all that light appears in the second image. The test was called Apple-2, and it was part of Operation Teapot, a fourteen blast series designed to examine potential tactics for ground forces under nuclear attack. We aren’t military experts, but we have a pretty good idea what the best tactics are—run like the Devil is chasing you. Come on now—tactics for infantry under nuclear attack? What would those be, really? Wear BluBlockers? Hide inside a fortress of hot dogs? Strategy our asses. We think the Army just liked blowing shit up. 

The unusual image you see above, which probably has you just a rarin’ to book a hotel room in Los Alamos before they’re all gone, appears in authors John O’Brien and Jeremy Borsos’ recently published Atomic Postcards: Radioactive Messages from the Cold War. The book features a wide array of nuclear themed mid-century postcards, some of which were produced for educational purposes, some to influence political debate, and some—like this one—to boost tourism. All the images we’ve seen from Atomic Postcards are fascinating, and we have a feeling this will be the hottest nuclear coffee table book since Michael Light’s stunning collection of atomic images 100 Suns. Historical note: the above photo is actually from an atomic test at the Nevada Proving Ground in 1952, but as far as the Los Alamos chamber of commerce was concerned, any old mushroom cloud would do as long as it was irresistibly enticing. Mission accomplished, chamber guys. Our bags are packed. If you’d like to see more of Atomic Postcards, there’s a slideshow here, and if you’d like to see Pulp Intl.’s collection of nuke images, just click the fallout shelter icon in the sidebar. 

Above, a photograph of the superheated debris cloud of the American nuclear test codenamed Climax, part of the series Upshot-Knothole, detonated at the Nevada Test Site today in 1953. 

Photo of the mushroom cloud generated by the American nuclear test Buster Charlie, a fourteen kiloton shot conducted at the Nevada Test Site, today, 1951. 

Photo of the U.S. nuclear test Able. There were many Able tests, but this one was part of Operation Tumbler-Snapper, which took place at the Nevada Test Site, this month in 1952. The smoke trails you see around the blast were created by rockets, which were launched just before detonation, and were used to mark the progress of the bomb's shockwave.

Frank Sinatra made a lot of nightspots famous. His mere presence—along with that of his Rat Pack—sprinkled gold dust on bars and eateries from end to end of the U.S., bestowing places such as 21, Toots Shor’s, and Chasen’s with fame that lasted long after the Rat Pack had died. That fame helped many of those old haunts survive into the new millennium, but now one of the most magical Rat Pack hangouts—the Cal Neva Lodge in Lake Tahoe, Nevada—is on the endangered list as it closes its gaming rooms today due to low profitability. Sinatra owned the Cal-Neva between 1960 and 1963, his star power drawing Hollywood’s top celebrities, along with mob figures who he reportedly shuttled back and forth to various points around the property via old bootlegging tunnels. He made the Cal-Neva Lodge the jewel of Lake Tahoe, a piece of Tinseltown in what was little more than an alpine village.

But the Cal-Neva’s fortunes have been in decline for decades due to the proliferation of nearby Indian casinos, and the general dominance of Las Vegas. When the recent recession hit, the current owners—who had laid off about a hundred employees since 2006—finally decided they could not keep their gaming rooms in operation. Officially, at least, today’s closure is temporary, but industry insiders note that Rat Pack chic is not enough to draw modern gamblers to an older casino like the Cal-Neva Lodge. If so, it’s quite possible that not only will the gaming rooms never reopen, but that the entire Lodge has begun its final decline.