A visit to Carlsbad cavern
Willis T. Lee
págs. 1-40
Adventures among the " Lost tribes of Islam" in Eastern Darfur
Major Edward Keith Roach
págs. 41-73
Timbuktu, in the sands of the Sahara
Cecil D. Priest
págs. 73-94
Reelfoot - An earthquake lake
Wilbur A. Nelson
págs. 95-114
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