Sometimes, conference papers are published in journals published by the sponsoring agency. Increasingly, conference papers are being published on web sites. The Engineering Library E-Texts site lists some of the major collections. However, many authors are now self-publishing their conferences on their own web sites. The easiest way to locate these is through a search using your favorite search engine, searching by the presenter's name.
Conference papers tend to be timely presentations.
They normally have strong supporting documentation, graphs,etc. Many conferences are now publishing the proceedings before the papers are presented so they can be distributed to the attendees. Most others endeavor to publish shortly after the conference. For these reasons they tend to be relatively current. The CAT - provides access to the conference in its entirety.