Date registered: Dec 2006
Vehicle: 30+ mercedes
Location: Long Island, NY
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Your best bet it to ebay them one at a time.
Each parts book as a 5 digit number and a title and a revision letter.
Post those things and see what happens.
99% of that is obsolete information because of the EPC computer system.
A few of them are not on the EPC yet, like the 190SL or 230SL. A few contain superceded information that the EPC didn't record. An early 230SL book has different stuff from the late one.