From back cover of initial volumes:
This acetate is the eleventh volume in a collector's set which will capture all six nights at Madison Square Garden. Only eleven numbered copies will be produced. Volume Eleven consists of the part of the concert held on June 10th 1977. Subsequent volumes will continue where the last one left off until each concert is complete.

New York City, the infamous summer of 1977..... Temperatures soared into the hundreds. Looters poured into the streets as blackouts plunged the city into darkness. Terror gripped the people as the mysterious serial killer nicknamed Son of Sam gunned down random strangers in the night. Chaos and fear reigned in a city besieged.

Enter into this fray the mighty Led Zeppelin. Strong into their first North American tour in almost two years, the band takes up residence at Madison Square Garden for six unbelievable nights. Their raw power and aggression breathed new life into crazed fans in need of release. Respite from the city was found through the four who wield the Hammer of the Gods..... Led Zeppelin.