4 bb HASH(0xd977f0)
    5 bb.key CoveredBridges400
    6 blist.bb  blist.HASH(0xd977f0)
    7 bb.item desc CoveredBridges400('desc')
    7 blist.bb.keys blist.ARRAY(0xd8f730)
   7a blist.bb.vals blist.ARRAY(0xd8f7b0)

    8    blist.(CoveredBridges400).desc  or blist.bb.desc
    9   blist.(CoveredBridges400).curr   or blist.bb.curr
   10