The Internet Archive is particularly useful for finding Eminem's rarest early work and non-album tracks: Pre-Fame Rarities : Look for the EP (1988), Bassmint Productions tapes, and the original (1996) album. The Soul Intent Era
The Internet Archive functions as a backup drive for the world. You can find entire uploaded folders titled "Eminem: All Westwood Freestyles 1999-2005" . These rips preserve the exact static and radio interference of the original broadcasts, giving them a visceral, "you are there" quality that a studio remaster lacks. Eminem Discography Archive.org