These are the cover/booklet scans for the [Touhou lossless music collection v.13](?page=view&tid=300895). You might also be interested in [supplementary materials](?page=view&tid=300893): everything that came with touhou albums that is not an album file (.tta) or a cover scan (.jpg/.png). Typical files include cdextra, rip logs, lyrics, music sheets, omake mp3s, minigames, promotional videos, etc.