Happy 150th Birthday, Ella! The youngest of the Mahaffie children, Ella grew up hearing stories of stagecoaching and yet lived to travel the Midwest in her personal car. This joint program with the Olathe Historical Society is free and no registration is required. Arrive as early as 6 p.m. to enjoy living history activities inspired by Ella on the Mahaffie grounds ahead of the 7 p.m. program.