Complex sentence: The Mill Valley Public Library is also home to the Lucretia Hanson Little History Room which has thousands of books, photographs, newspapers, pamphlets, artifacts, and oral histories on the history of California, Marin County, and Mill Valley.
Split into simpler sentences: The Mill Valley Public Library is also home to the Lucretia Hanson Little History Room. It has thousands of books, photographs, newspapers, pamphlets, artifacts, and oral histories on the history of California, Marin County, and Mill Valley.