Cassette
Led Zeppelin IV
USA (CS 19129) #1

Version #1 – Side 1 & Side 2 has “AR”  under the track time, Dolby logo above Atlantic logo
Version #2 – Does not have “AR” or Dolby logo, Side 1 has “MADE IN U.S.A.” embossed on Top right of shell
Version #3 – Sleeve flap includes UPC bar code, Side 1 & Side 2 has “AR”  under the track time, no Dolby logo
Version #4 – Manufactured for BMG Direct Marketing
Version #5 – Manufactured by Columbia House, Sleeve #1
Version #6 – Manufactured by Columbia House, Sleeve #2
Version #7 – Manufactured for RCA Music Services, Side 1 & Side 2 has “AR”  under the track time, Dolby logo above Atlantic logo
Version #8 – Manufactured for RCA Music Services, Does not include “AR” or Dolby logo