They're still made to this day by Magic Makers, Inc. and printed for them by USPC. The MM website has downloadable instructions for most if not all of their magic decks.
As a kid, I thought they were the coolest thing, but as an adult, they're the most blatantly marked deck I've ever seen. Most people looking at it will say it's strange and it will fail any riffle test in epic fashion - almost worse than if you riffle-tested the faces instead! Still, it's an interesting historical artifact.
For similar functionality in a slightly less-obvious deck, try the Gambler's Deck. Current printings are Bicycle Maiden Back, but if you're lucky, you might stumble on a now-rare and out-of-print Bicycle Rider Back version. They're stripped, marked multiple ways and in stack order - they'd fail a riffle test nearly as badly as a DeLand, but the back design is more innocuous-looking in the first place. Between the Maidens and the Riders, they had an interim generic back - avoid that one like the plague, it's too obvious.