I did the introduction for Ecstatic Nausea and own bunch of original paintings, signed/numbered editions of photo prints, in various sizes. He got exhibition some years ago where museum quality prints of the stuff was available. Due size, I guess some of them are hard to send out abroad, but good stuff.
Too bad possibly the best interview with him, is in Finnish, in few hours long podcast interview by Sarvilevyt - meaning myself of course, hah.. When discussing his art, background and life in general, in finnish, it gives a lot of information you can't really find anywhere else. First time Siikala artwork was featured in something I put out, was already like.. 96? 97? Something like that and since then we've done a lot of things together.
His new zine indeed coming very soon. IOPS stuff, so will be listed at nhfastore as soon as its ready to ship.