Ahira's Hangar

I thought I'd read all of Julian May's books, but I've never read (or seen) The Surveillance and The Metaconcert.

Oh! There is one called Intervention though I thought that was written after the others. Does Intervention=Surveillance+Metaconcert or is it a different book?

I think that it has one title in hardcover, and then for whatever reason was split into two mass market paperbacks and given two other titles. So I think that Intervention= Survellance + Metaconcert.

OK.

Now I don't know whether to be glad that I haven't let two of the series escape me, or whether to be sad that there aren't too more out there left to read.