Gary is correct re: Seaver and Lyme Disease. His health has been compromised and I've heard that he won't probably be doing any more public signings.
Here's hoping that Tom Terrific makes a full recovery from Lyme Disease.
BTW, apparently it's easy to treat if caught early, but quite problematic if diagnosed late. We actually lost a close friend whose Lyme Disease was not properly diagnosed, leading to many serious complications and eventual early death.