New on Archive.org, an academic book on Alan Moore: Out from the Underground (2018), one of the Palgrave series which discussed comics and graphic novels.
Has little to say about Lovecraft, but does show that the Lovecraft influence was strongly present as early as 1969…
Having met the young Dave Womack at the second British comics convention in 1969, he [Moore] sent him some illustrations and an article on Lovecraft, the latter of which featured in the first issue of his dual comics fanzine/adzine Utopia/Valhalla in February 1970.
And adds one more item to the list of early Lovecraft as character appearances…
Moore’s “Breakdown” in Embryo 4 [circa 1971?] had similar Orwellian themes (‘Cold terminal eyes in the control chamber fingerbutton proseflash’) and ends with a conversation between Orwell, Lovecraft, and Ray Bradbury.
Embryo #4 is a zine that doesn’t appear to be on Archive.org.