The Mary Harris "Mother" Jones Historical Marker is located at Powder Mill & Riggs Road in Adelphi, MD. It marks the place of Mother Jones' death at the Burgess Farm on Nov. 30, 1930. Jones spent the last two years of her life being cared for by Lillie May Burgess. Mother Jones celebrated her 100th birthday at the farm on May 1, 1930. the farm was later converted into the Mother Jones Rest Home and then became the property of the Hillandale Baptist church.