The first women's suffrage referendum occurred in Kansas in 1867. Susan B. Anthony and Elizabeth Cady Stanton brought national suffrage advocates to Kansas to campaign to include Olympia Brown, Lucy Stone and Henry Blackwell, and George Francis Train. During the campaign many spoke at Laing's Hall, northwest corner of 4th & Delaware in historic downtown Leavenworth, a contributing property and listed on the National Register of Historic Places. Laing's Hall was built during the Civil War and dedicated in April 1864. Designed to accommodate 1,000 people comfortably in arm chairs, it was considered the most pretentious of public halls. Anna Dickinson, suffrage advocate, also spoke here in 1869 and 1871.