City's hub, 1882- early 1900s, teeming with cotton buying, horse trades, band concerts, political rallies, switching railroad trains. Site of fire station, standpipe, 1933 memorial library named for lumberman J. H. Kurth (1857 - 1930), Square was renamed 1961 for Kurth family friend, Louis Calder (1879 - 1963) of New York.