Regardless of the sources you provided nothing shown at the GoogleBooks link and a main albums list by Allmusic how is this purported canonical sequence aimed at a general audience rather than just fans already familiar with the discography If there is a source that explicitly says these are the albums associated with the Who s canon then it would only be of use here a section that summarizes an artist s major works Wikipedia WikiProject Musicians Article guidelines It doesn t spill over to the chronology chain Any arguments as to whether an EP is an album or not should be made at WP ALBUMS What matters is that there s an article for Tommy EP and it s release follows this album If the EP in question lacks that much notability nominate it for deletion