Single
Portugal (N-28-101)
Immigrant Song / Hey, Hey, What Can I Do (#1)

Version #1 – “LED ZEPPELIN” in capitals on the back sleeve, song titles separated by ” / ” on front sleeve, year next to “BIEM” on label, “Producao” label credit

Version #2 – Portuguese Atlantic company sleeve, year next to “BIEM” on label, “Producao” label credit

Version #3 – “Led Zeppelin” on the back sleeve, song titles separated by ” – ” on front sleeve, 2 lines of text on the back sleeve with “Graficos” above “Portugal”, no year on the label, larger text font, “Prod.” label credit

Version #4 – “Led Zeppelin” on the back sleeve, song titles separated by ” – ” on front sleeve, 3 lines of text on back sleeve, no year on label, “Producao” label credit

Version #5 – “Led Zeppelin” on the back sleeve, song titles separated by ” / ” on front sleeve, 2 lines of text on the back sleeve with “Graficos” under “Portugal”, no year on label, “Producao” label credit