Myths and Marvels of Astronomy
    R.A.  PROCTOR

  The Wonders of the World
    CHARLES G. ROSENBERG

  The Wonders of Nature
    PROFESSOR RUDOLPH

  Volcanoes of North America
    ISRAEL COOK RUSSELL

  Aspects of the Earth
    N.S.  SHALER

  Wonders of the Bird World
    R.B.  SHARPE

  The Wonders of Water
    GASTON TISSANDIER

  Total Eclipses of the Sun
    MABEL L. TODD

  Wonders of Insect Life
    JOSEPH C. WILLET