Letter 7 - Meeting of Waters and Men

Letter 8 - Medicine, Mystery, and Massacre

Letter 9 - The Ox and the Mire

Letter 10 - Madame Blavatsky and Theosophy

Letter 11 - Connecting Two Oceans

Letter 12 - Lungs of the Earth

Letter 13 - Indigenous Resilience

Letter 14 - Mummies and Mobsters

Letter 15 - Archeology in the Early 1900s

Letter 16 - The Man with the Muck Rake

Letter 17 - Medicine Man

Letter 18 - The People

Letter 19 - Birds of a Feather

letter #20 - Rediscovering Lost Cities

Letter 21 - Cultivated Land and Powerful Women

Letter 22 - The Mother of Mesoamerica

Letter 23 - The Lost Animals

Letter 24 - The Progress of Women and Children