Murray Comics' Ghostly Haunts and the alternate Gredown translations of Spanish horror stories

Murray Comics' Ghostly Haunts contains Double Murder in the Rue Morgue, previously published by Gredown as Double Murder in the Morgue.

As it turns out, Ghostly Haunts is the repository of no less than four Spanish horror stories which appeared in Gredown comics in different translations.

Gredown's Planet of Vampires #2 contains The Vampire:

This was recycled by Gredown a few years later in Eyes of Night:

This story was published with a different translation by Murray Comics in Ghostly Haunts:

As per Double Murder in the Rue Morgue in Ghostly Haunts, there is no editorial credit, but again this appears to be from a Spanish source - note the double exclamation marks attending BAWM in the fourth panel of the final page:

The first exclamation mark is deleted in Planet of Vampires #2:

Presumably this is also the case in the Eyes of Night printing but I don't have a copy to hand.

Ghostly Haunts contains The Invisible Wall:

A different translation was published by Gredown in Weird Tales of the Macabre #1

Gredown recycled this story in Terror Tales Album:

This version of the story maintained the double exclamation marks on the final page:

The 'extra' exclamation marks were excised in the Ghostly Haunts version:

Ghostly Haunts also includes the story Forestate of Death:

Yeah, forestate doesn't appear in my dictionary either, but Death in Advance satisfies my inner grammarian:

Death in Advance was published by Gredown in Weird Tales of the Macabre #1, and also recycled in Terror Tales Album:

The Gredown versions include the credits Art by Michael G. Esteban and Script by Raymond Hervas. The Ghostly Haunts version does not have these credits but does include the note Copyright: I.M.D.E.

This appears to have been originally published as Anticipo de Muerte in Dossier Negro #24.

Given four Spanish stories appear in Ghostly Haunts with alternate translations to the Gredown issues, it would appear they were sourced from a different agency. This may be I.M.D.E. 

Of course, it could be the same agency providing new translations, but either way, I think it is unlikely they were exclusively commissioned by Murray - I expect they were targeted to a larger English-speaking market and also made their way to Australia. Identifying the original Spanish sources of these stories has been a longstanding goal, but I'm now also keen to identify international printings of both translations. And could there be a third...?

Note also the coincidence of some of these stories orbiting three issues: Weird Tales of the Macabre #1, Terror Tales Album and Ghostly Haunts. Terror Tales Album was a bumper edition by Gredown which contained recycled material from Weird Tales of the Macabre and other earlier Gredown issues. Ghostly Haunts appears to have been published within a year or so of Terror Tales Album.

There may be more Australian printings of these stories.