As of 2010, the Consortium Luxembourg Portal offers you access to all entries from 1975 until the present day in the following Web of Knowledge products:

• Science Citation Index Expanded
• Social Sciences Citation Index
• Arts & Humanities Citation Index

And of course, you still have access to the Conference Proceedings Citation Index – Science and Social Science & Humanities from 1990 to the present day.

Don’t forget that the Web of Knowledge can be searched directly in the Portal.  Look for the Searchable type and symbol in the portal entry: