The Mattapoisett Free Public Library, the Elizabeth Taber Library and the Joseph H. Plumb Memorial Library will present a talk and book signing by Margaret Medeiros, author of "New Bedford Mansions: Historic Tales of County Street" on Saturday, Oct. 24 at 2 p.m. at the Mattapoisett Library, 7 Barstow St.

Books will be available for purchase and signing by the author. Hear tales of the wealthy families of New Bedford, such as the Rotch, Morgan and Howland families.

Medeiros is a research historian focused on New Bedford’s artists, families and homes. She is a frequent guest lecturer at the New Bedford Whaling Museum, the Rotch Jones Duff House and Garden Museum and the Dartmouth Heritage Preservation Trust. She was a contributing writer for "The Charles W. Morgan Returns to New Bedford".

For more information, or to reserve a seat, call your local library, or check the events calendar at www.plumblibrary.com.