Dnd, 1st ed PHB cover is Moloch. Origins of Moloch.

 Not an Efreeti, it is Moloch and arch devil.  

It was an Efreeti (almost looks the same) on the cover of the DMG I think, back then. 

Moloch on the dnd 1e PHB cover. It's twice as creepy now that I know it's based on a real evil deity. 

Efreeti, DMG 1e. 

Wikiped has the freaky Hebrew bible history of Moloch/Molech/Molek: https://en.wikipedia.org/wiki/Moloch 

Summary: Sick sacrificial stuff into the belly of a bronze bull. Super evil and reviled deity of the pagan world. This must be the same one in the old Moses movie with Charlton Heston. 

This has some crazy info, if correct: https://allthatsinteresting.com/moloch

Via Wikipedia.

1800s drawing

The entrance to the Temple of Moloch in Carthage in Cabiria (1914). Via Wikipedia.

Wikped says: In film and TV: The depiction of the sacrifices to Moloch are based on Flaubert's descriptions, while the entrance of Moloch's temple is modeled on a hellmouth. Cabiria's depiction of the temple and statue of Moloch would go on to influence other filmic depictions of Moloch, such as that in Fritz Lang's Metropolis (1927), in which it is workers rather than children who are sacrificed, and Sergio Leone's The Colossus of Rhodes (1961).^[70]

Hellmouth info from wikipedia: 

A Hellmouth, or the jaws of Hell, is the entrance to Hell envisaged as the gaping mouth of a huge monster, an image which first appeared in Anglo-Saxon art, and then spread all over Europe.

This says it's a real place where children were sacrificed:

Via https://allthatsinteresting.com/moloch

Lovecraft mentioned Moloch, via http://yog-blogsoth.blogspot.com/2012/12/moloch.html: 

"Moloch and Ashtaroth were not absent; for in this quintessence of all damnation the bounds of consciousness were let down, and man’s fancy lay open to vistas of every realm of horror and every forbidden dimension that evil had power to mould."

H.P. Lovecraft, The Horror At Red Hook

"Moloch was the god of the Ammonites, portrayed as a bronze statue with a calf’s head adorned with a royal crown and seated on a throne."

"Rabbis claim that in the famous statue of Moloch, there were seven kinds of cabinets. The first was for flour, the second for turtle doves, the third for an ewe, the fourth for a ram, the fifth for a calf, the sixth for a beef, and the seventh for a child. It is because of this, Moloch is associated with Mithras and his seven mysterious gates with seven chambers. When a child was sacrificed to Moloch, a fire was lit inside the statue. The priests would then beat loudly on drums and other objects so that the cries would not be heard."

Colin de Plancy, Dictionnaire Infernal

"First MOLOCH, horrid King besmear'd with blood

Of human sacrifice, and parents tears,"

John Milton, Paradise Lost

Me: Reading that last bit... maybe I can almost finally understand the insanity behind human sacrifice. It really bothers me, always had... it is perhaps the most evil thing I can imagine. As a parent... to think someone could have somehow taken a child and killed it for some ritual. WHY? Maybe ... maybe thousands of years ago, when some invaders came to attack, peaceful folk would give up their food in hopes of appeasing the attackers. Even today in Asia, I've seen normal folks leaving out food for religious reasons... as an offering to ancestors or whoever, so the notion seems universal in that sense. Did it all date back to ancient attacks? Or maybe ancient "lords" who demanded a tax of food and maybe even their children... children to join ranks for their army or as slaves? In the ancient Mayan world, it seems that slavery and human sacrifice went hand in hand also. How could the parents not prevent the child sacrifice in any of those cases... were they slaves, too? Were the parents killed before in war? It's terrible, and thank God Christianity stopped this sort of thing in many places (if my weak history knowledge is correct). 

Check out his: 

http://yog-blogsoth.blogspot.com/ 

and

http://blarghhhspot.blogspot.com/

Random, see weird neo-retro Lizardmen of Los Angelas: https://fictionliberationfront.net/lizard.pdf 

AI image creation, almost good: https://creator.nightcafe.studio/creation/yLm9v3AjgmVHHntMdopf