This is a collection of all of DK-related sites. Feel free to do what you like with these sites I've scraped. No credit needed. Here is a mirror of the archives offered on this topic: https://archive.org/details/donkeykongsites.
Contents
1. Official DK Site Backups
http://www.dkc-atlas.com/forum/download/file.php?id=3365 - The Donkey Kong Country trilogy pages (nintendo.co.jp)
http://www.dkc-atlas.com/forum/download/file.php?id=3366 - The DKL trilogy and DKC GBC (nintendo.co.jp)
http://www.dkc-atlas.com/forum/download/file.php?id=3423 - Diddy Kong Racing (English & Spanish)
http://www.dkc-atlas.com/forum/download/file.php?id=3367 - Diddy Kong Racing N64 & Donkey Kong 64 (nintendo.co.jp)
http://www.dkc-atlas.com/forum/download/file.php?id=3243 - Donkey Kong 64 (U.S.)
https://www.mediafire.com/?ww45zfmpakavvsd - Donkey Kong 64 (Europe, German/English)
http://www.dkc-atlas.com/forum/download/file.php?id=3050 - Donkey Kong 64 (Swedish)
http://www.dkc-atlas.com/forum/download/file.php?id=3375 - Donkey Kong Country GBC (U.S.)
http://www.mediafire.com/download/y3ydjsg259a3rw3/ -Donkey Kong Country GBA (Europe)
http://www.mediafire.com/download/3h6nsjveh6opax0/ - Donkey Kong Country 2 GBA (Europe)
http://www.dkc-atlas.com/forum/download/file.php?id=2961 - Remnants of DKC2 GBA (North America)
https://www.mediafire.com/?5bznqhwq25n00dm - DK: King of Swing (North America)
http://www.mediafire.com/download/3pyz0vt0z614yih/ - Mario vs. Donkey Kong 2 site & remnants of MVDK GBA site (North America)
http://www.mediafire.com/download/udjj7ij3vmqbari/ - Mario vs. Donkey Kong 2 (Australia)
http://www.mediafire.com/download/idxe4t4e9my76fr - Diddy Kong Racing DS (Europe) -- UPDATED 03/15/14!
https://www.mediafire.com/?7d4k8y8bg874jxr - Diddy Kong Racing DS (Australia)
https://www.mediafire.com/?wwlulfmtd8kwxww - DK Jungle Climber (North America)
2. Non DK Site Backups
http://www.mediafire.com/download/uu69aoorra2d9g9 - Luigi's Mansion (Europe)
3. DK Fansite Backups
Entire series
http://www.dkc-atlas.com/forum/download/file.php?id=3398 - Curling Freak (Geocities; part of DKboy's site)
http://www.dkc-atlas.com/forum/download/file.php?id=3253 - Dixie's Den (Angelfire)
https://www.mediafire.com/?a342ema29pkh5hd - DK Megasite (retrogames.com)
https://www.mediafire.com/?sq1hvs6awfhwhfk - Donkeyboy/DKboy (Tripod)
https://www.mediafire.com/?0tpz37z5wovlckr - donkeykong.gamebub.com (still online)
https://www.mediafire.com/?iyyj2v2ocum516n - DKC Arekore (symphonic-net)
https://www.mediafire.com/?dx6jfxmd3knmg9q - Donkey Kong Database (Classic Gaming)
https://www.mediafire.com/?3avtik8a377164l - Donkey Kong Fans (Piczo)
http://www.dkc-atlas.com/forum/download/file.php?id=3327 - Donkey Kong Jungle (Geocities)
http://www.dkc-atlas.com/forum/download/file.php?id=3373 - Donkey Kong Racing (not related to the eponymous title, despite the title)
http://www.dkc-atlas.com/forum/download/file.php?id=3369 - Donkey Kong World (OFNstudios)
https://www.mediafire.com/?5533hywvnylz9ci - GameHiker—DK-related renders
http://www.mediafire.com/download/5qdaxnmdr53d2qh - Planet DK (late 90s site)
Donkey Kong Country series
http://www.dkc-atlas.com/forum/download/file.php?id=3245 - Macshack DKC section (dates back to August 1995)
http://www.dkc-atlas.com/forum/download/file.php?id=3254 - CMT97 DKC2 section (Tripod)
http://www.dkc-atlas.com/forum/download/file.php?id=3256 - DKC2 Homepage (AOL Hometown)
http://www.dkc-atlas.com/forum/download/file.php?id=3328 - DK Island Spa (AOL Hometown)
https://www.mediafire.com/?os1sdwesp6in1wh - dkhacks.zouri.jp
Diddy Kong Racing
http://www.dkc-atlas.com/forum/download/file.php?id=3361 - DKR World (Angelfire)
http://www.dkc-atlas.com/forum/download/file.php?id=3043 - XCSki (Laura)
http://www.dkc-atlas.com/forum/download/file.php?id=3044 - Usinternet (Jes)
http://www.dkc-atlas.com/forum/download/file.php?id=3246 - DKR School (xoom.com)
Slightly related: Donkey Kong Racing Speedway (GBA Galaxy): http://www.dkc-atlas.com/forum/download/file.php?id=3368 (Full site: https://www.mediafire.com/?63t0gxf62azwyay)
Donkey Kong 64
http://www.dkc-atlas.com/forum/download/file.php?id=3249 - DK64 site from 8m.com -- only good for the images
http://www.dkc-atlas.com/forum/download/file.php?id=3252 - Dr. Doak (Donkey Kong 64 section)
http://www.dkc-atlas.com/forum/download/file.php?id=3371 - Donkey Kong 64 Square
DKC TV Show
http://www.dkc-atlas.com/forum/download/file.php?id=3370 - Qyzbud Tripod (qyzbud.tripod.com)
https://www.mediafire.com/?sa3a17qaoejpceb - Kongo Valley (Qyzbud's other old site; kongovalley.50webs.com)
Rareware (with DK content)
http://www.dkc-atlas.com/forum/download/file.php?id=3428 - Rareware.com (only DK material)
https://www.mediafire.com/?3avaz98bzbmwo09 - Rarewhere (Geocities)
https://www.mediafire.com/?h9uvtl1whh106ad- Rare Lair (Angelfire)
http://www.dkc-atlas.com/forum/download/file.php?id=3329 - The Censored DK Site with the ROM Links Removed
4. DK-related files
http://www.dkc-atlas.com/forum/download/file.php?id=3285 - DK64 Wallpaper (nintendo.com.mx)
http://www.dkc-atlas.com/forum/download/file.php?id=3051 - AIM icons for DKC3 GBA
http://www.dkc-atlas.com/forum/download/file.php?id=3053 - DKC3 GBA artwork images
http://www.dkc-atlas.com/forum/download/file.php?id=3054 - DKC3 GBA trailer (from nintendo.com)
http://www.dkc-atlas.com/forum/download/file.php?id=3326 - DK Vine Forums avatars & smilies
https://www.mediafire.com/?ijz7714k0gfgik8 - DKRDS and Jungle Climber
http://www.dkc-atlas.com/forum/download/file.php?id=3359 - DK64 German site profile images
https://www.mediafire.com/?zcdr2cn1ye10t2v - Old DKR videos and pictures from nintendo.com in 1997.
http://www.dkc-atlas.com/forum/download/file.php?id=3372 - While not actually a file, it's an individual web page containing hints and cheats for DKC3 SNES
4.1. DK Press Kit Assets
https://www.mediafire.com/?ijz7714k0gfgik8 - E3 2006 Artwork CD
https://www.mediafire.com/?tm566e7tumm55c2 - Screenshots & artwork from 06/2006 press.nintendo.com
https://www.mediafire.com/?u939b0xy5xwpkfq - E3 2004 Press Kit
https://www.mediafire.com/?4utwdxsc6z67swv - DK material from Press Kits with barely any of it