No, there aren't any articles in the Library Catalog. But sometimes a periodical database will lead you to check the OC catalog.
Let's say you're searching for articles in the periodical database Academic Search. It doesn't have the full text of your article, so it tells you to "check the OC Catalog".
The Catalog record will tell you whether the Beam Library has a copy of the periodical the article is located in. The Catalog will also show you where the journal is located in the Library. Another place to look is in the E-Journals list.
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