I'm hoping to use them as reference for some animations I'm doing
Making some animations for some El-Hazard story? That would be interesting...

However, since the pages are only identified by number, and not by what's on them, it'll take me a considerable amount of time to go through and find all the significant 'Bugrom' pics, concept sketches, frames and backgrounds that I need.
I think it isn't very easy to identify all the pages of the books... All the contributers do this as a hobby, and doing this for hundreds of pages would take weeks...
But, if your're really on to animation, I really suggest you buy the books (get them on e-bay), because this way you can get the hole thing much better (you don't have any headaches with the bandwidth and you can get resolution calibrated images for tracing, chromakeying, advanced masking....).
Moreover, don't forget that this stuff is AIC/Pionner copyright. So, I do think that the scans around here are just for fan's reference. If you really want to use them on a project, buy the books (that's what I did, I bought all the books

).