Rough Edges: "By the way, while it was a great TV show, THE AVENGERS may hold the distinction of having the worst series of tie-in paperback novels. The ones published by Berkley and written by Norman Daniels (usually a fairly good writer), Keith Laumer (likewise), and John Garforth (whoever he was) are just terrible, even worse than the I SPY novels by John Tiger (who I think may have been Walter Wager)."
I've never read any of the novels based on THE AVENGERS, but I'm in agreement with James that the writers involved are usually pretty good. Keith Laumer wrote some hilarious SF novels about Retief of the CDT, as well as a pretty darned good Raymond Chandler pastiche, FAT CHANCE, which was made into a movie with Michael Caine. I like the book and the movie, but not everyone agrees with me. And then there's Norman Daniels. I remember with great affection a book called SPY HUNT, which I liked a lot. Later, the main character, John Keith starred in a series of novels for Pyramid Books, but I never liked any of them as much as the first. I believe Daniels got his start in the pulps and maybe was a writer for G-8 AND HIS BATTLE ACES. James would probably know for sure.