Good presentation. More time on Hamilton than Brackett. He was quite funny and mentions being at a World's Fair with Otto Binder and Mort Weisinger (among others).
I got and devoured the first Ed Hamilton collected stories some time ago, and was amused by the giant invisible spider tale, since I'd read similar tales about giant invisible spiders (some quite recently!) in Bridge of Birds by Barry Hughart (an AWESOME funny story set in a fantasy medieval China), HP Lovecraft (IIRC? something about alien ruins on Venus, his only, AFAIK, dabble with science fiction?) and Fritz Lieber (one of his Fafhrd & the Grey Mouser tales)!
It was like 'giant invisible spider week!' Not a great omen if I were an arachnophobe!
There's a house off the highway I drive down most days that has a giant visible.spider as a Halloween decoration. It slightly freaks me out when I drive past.