IRONROOSTER
They are the only 2 reprints the NMRA did in hard and soft back versions.
But, but, splutter, but...
The ORER was only ever printed in SOFT cover. At least as far back as 1926, my earliest copy.
The Prototype Police will NOT be happy.
Seriously, though. The ORER's are not terribly durable, especially when they're pawed continuously by model railroaders. So perhaps the hard covers are a (dare I say) an improvement.
Kupla ORER stories:
Years ago, a guy bought all the back copies of the ORER from the publisher. I still have his flyer. Some buddies and I made a shopping list--every 5 years, I believe--and plunked our bucks down. I bought a couple of old ones (like the 1926) just so we could have a continuous set.
Other story: one of the members of an old model railroad club I was in worked for Stauffer Chemical. He'd show up at the club with all the old copies of the ORER. That explains my heavy "investment" in the '80's ORER's. Sheldon King. Nice guy, by the way.
It's getting really hard to lay ones hands on ORER's, these days. If you're interested, I recommend checking out the Westerfield collection on disk:
https://id18538.securedata.net/westerfieldmodels.com/merchantmanager/index.php?cPath=107
It ain't the real think, but it IS a bit easier to store.
Ed