The Ogdensburg Historic Preservation Commission will host free workshops at the Ogdensburg Public Library on Tuesday, April 29 at 1 p.m. and Saturday, May 3 at 10 a.m. Learn how to research your home’s history with help from City Historian Julie Madlin and local experts. The event supports the Heritage House Program. Applications available at City Hall, the Ogdensburg History Museum, or ogdensburg.org. Info: historian@ogdensburg.org or 315-528-0733.