When the Ultra site went down, along with all the others such as Katy, Juliette etc, the unreleased sets were apparently lost. They all subsequently appeared in a heavily censured format (ie no topless) which meant that many of the sets and pics were missing. There should be 60 pics per set. The sets you refer to were probably all topless. Maybe some day the originals will show, but what has been posted here did not come from the Ultra site but from a special site set up to release what it could.