Heading down the rabbit hole…
Qwikiverse maps the references between stories: what Fantastic Four #1 nods to, and what nods back. How it works
Wikipedia: Fantastic Four vol.1-1 (Nov. 1961).jpg
.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free.id-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wik
Fair use
Nothing spotted here yet.
A line quoted, a cameo, a character named after something: if Fantastic Four #1 nods to another story, or another story nods to it, spot the first one.