I say “an historical” as well, but this does raise the question about a or an before other words starting with a pronounced H. Too sleepy right now to think about it.
Tough question! I like it and would recommend it, if I knew any of my friends were comics readers. Maybe start a campaign with those of us who do enjoy your humor to spread the word?
You forgot all the presumably antigay closeted Republicans who crashed the local Grinder server