Already quoted by Calinou here, but it is a good idea to put all this in a single topic, thanks TwistedTwigleg.

I found some others: - Freebies on HDR MAPS - Freepanorama

I'm not sure if these are public domain, but he says 'use in every way you want', so I'm guessing that's close enough?

I used these before in mostly unreleased projects, they are only skies, which can be helpful at times. I just remembered I had it book marked :smile: