Yes, I believe there's still quite a lot of images from that old collection that haven't appeared on Coventry Digital. The first reason that came to mind was that some of the originals hadn't been scanned in an acceptably high resolution. But then, thinking about it again, I think that all of those on
Pictures of Coventry were originally being offered for sale as prints up to 10" x 8" - so they must've been reasonably detailed.
One particular photo I recall that I'd love to see in greater detail was this one, looking across the ground cleared for the new Council House towards Caesar's Tower on the back of the Guildhall....