Led Zeppelin – IV Originals US Reel To Reel (2015, CD) - Discogs

Tight But Loose » Blog Archive LED ZEPPELIN II IT WAS 50 YEARS AGO /AT THE CAT CLUB/LZ NEWS/MUSIC MANIA FAIR/TBL ARCHIVE -REMASTERS 1990/DL DIARY BLOG UPDATE - Tight But Loose

Led Zeppelin – IV. (CD) - Discogs

What is the most expensive vinyl record you own? - Quora

Tight But Loose » Blog Archive LED ZEPPELIN II IT WAS 50 YEARS AGO /AT THE CAT CLUB/LZ NEWS/MUSIC MANIA FAIR/TBL ARCHIVE -REMASTERS 1990/DL DIARY BLOG UPDATE - Tight But Loose

Led Zeppelin – IV. (CD) - Discogs

Led Zeppelin – IV Originals US Reel To Reel (2015, CD) - Discogs

Do you regret buying vinyl records again? - Quora

Their Satanic Majesties Request - Wikipedia

What is the worst sounding album you've ever owned? : r/vinyl

Led Zeppelin = レッド・ツェッペリン – Led Zeppelin IV = レッド・ツェッペリン IV (2012, CD) - Discogs

Vinyl

Super-producer Dan Ubick Reveals The Soulful Riddims & Sounds Behind The Lions' Soul Riot 2-LP (The Witzard Interview #2)

Led Zeppelin – Untitled (1971, Reel-To-Reel) - Discogs