Long lost texts found mixed up in local addresses (4,3,7)

I believe the answer is:

dead sea scrolls

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'long lost texts found mixed up in local addresses' is the definition.
I can't judge whether this defines the answer.

'long lost texts found mixed up in local addresses' is the wordplay.
'local addresses' anagrams to 'DEAD SEA SCROLLS'.
Though, I am not clear how the anagram is indicated.

Can you help me to learn more?

(Other definitions for dead sea scrolls that I've seen before include "Old documents" , "ancient documents" , "Historic documents" , "ancient scriptures?" , "Documents found at Qumran" .)

I've seen this clue in The Guardian.

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