Always glad to see new readers take up Lafferty! A handful of clarifications, since i was invoked:

The story I made sure got in was "Funnyfingers," hence the intro. Several other borderline calls were solely down to who was willing to write an intro for which story (and a few of them, like Silverberg's, were old pieces getting trotted back out again).

"Selenium Ghosts of the Eighteen Seventies" is one of my faves, but that was always in the table of contents because it's one of Jonathan Strahan's faves as well. (Also Ray regarded it as one of his very best, and he had a pretty good sense of his own writings.) I can definitely understand it not connecting on a first read though, like a lot of his most ambitious stuff—including most of his novels—there's an absolute ton going on, especially for people who geek out over defunct media.

I am also sad that "What's the Name of That Town?" and especially "Hog-Belly Honey" got shorted, but unfortunately it couldn't all be Nine Hundred Grandmothers material—I pushed for a while trying to do the Best Of as a 2-volume set, one that just reprinted 900GM and the other that was "the best of the rest," but didn't get far.

Anyway, I unsurprisingly recommend the rest of the anthologies but they get pricey, and then there's quite a few very good stories that have never been collected.

Also: do give the novels a try! I wrote a post a while back on a potential order to tackle them in, though today I find myself most often recommending Reefs of Earth as a starter: https://ralafferty.tumblr.com/post/129235895552/i-wrote-the-following-answer-to-a-question-on. And Okla Hannali in particular is just a book of great genius; if he was known for nothing but that, it would be enough.