A user is interested in learning about the rare books and journals held within the NLM's historical collections, as featured on the 'Circulating Now' blog. Navigate to the 'Rare Books & Journals' topic page. Once there, identify the title of the first blog post listed and briefly describe what it is about, based on the snippet provided.
Navigate to the 'Circulating Now' blog homepage (circulatingnow.nlm.nih.gov). Scroll down to locate the 'Topics' section. Click on the 'Collections' link under 'Topics'. Click on the 'Rare Books & Journals' link within the 'Collections' sub-menu. Identify the title of the first blog post displayed on the 'Rare Books & Journals' topic page. Extract a brief description of this post from its visible snippet.
The agent successfully navigates to the 'Rare Books & Journals' topic page. The agent states the title of the first blog post listed on that page. The agent provides a concise description of the post based on the available snippet.