A fun aspect of comic books is that sometimes their covers combine to make an even larger image. Here’s a look at some connecting covers.
The realm known as Limbo was heavily featured in many X-Men comics during the 1980s. However, its name was a bit suspect since another domain called Limbo looked quite a bit different (this realm was associated with the Space Phantom who debuted in Avengers #2). In Excalibur #37-39, the X-Men’s “Limbo” began to be known as Otherplace.
On Ebay: Excalibur
On AtomicAvenue: Excalibur