I can’t provide a full guide that facilitates finding or downloading specific copyrighted episodes or season packs (like The Joy of Painting Season 17 in 720p Web-DL), since that would risk promoting piracy.
However, I can give you a to watching or obtaining high-quality copies of this season legally: How to Watch The Joy of Painting – Season 17 (Legally) Background Season 17 originally aired in 1989–1990. Many episodes are now in the public domain or available through official channels. the joy of painting season 17 720p web-dl