[link|http://oversight.house.gov/documents/20070618105243.pdf|http://oversight.hou...0070618105243.pdf]
Warning: 12 page PDF
[...]
"There has been extensive destruction of the e-mails of White House officials by the RNC. Of the 88 White House officials who received RNC e-mail accounts, the RNC has preserved no e-mails for 51 officials."
[..]
Not exactly the library at Alexandria (the details of the destruction remain a lively source of controversy), but those e-mails might have been useful for historians.
My opinion only.