The entire series, save for one episode, has been recorded in German and was previously available for download. However, due to the recent change in policy for the site the episodes were uploaded to, the links no longer work and the original uploader has not replaced them. Furthermore, the German dub used the original versions of the Season 1 episodes (before recaps were added to the show) making several recaps still missing. Even still, the original version of any Season 1 episode (with no recaps and an extended closing song) in English has yet to surface. The chances of such a find are unfortunately very slim as recaps were added to the show as early as July 2001 meaning someone would have to have recorded the show very early in its run to have an original.
Simply put, the whereabouts of Book of Pooh are unusually confusing and elusive for a Disney show.