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3 results
  1. Information Along the Underground Railroad – NLM Musings from the Mezzanine 
    https://nlmdirector.nlm.nih.gov/...on-along-the-underground-railroad
    ... people on the move—people displaced by violence, natural disasters, or economic ... deep indigo and shadowy black of Michna-Bales’ photographs stand ...
  2. 2019New_Mesh_Tree_Hierarchy.txt 
    https://www.nlm.nih.gov/.../download/2019New_Mesh_Tree_Hierarchy.txt
    ... 650.940.800.575.912.250.401.337 Indigofera B01.650.940.800.575.912.250.401. ... 473.393 Indican D03.633.100.473.396 Indigo Carmine D03.633.100.473.400 Indocyanine Green ...
  3. “Facts and Inferences”—Digitizing Shadows from the Walls of Death Part 3 – Circulating Now from the NLM Historical ... 
    https://circulatingnow.nlm.nih.gov/...from-the-walls-of-death-part-3
    ... of historic greens include sap from buckthorn berries, natural earth ... mineral, and indigo , a plant extract. These greens, while beautiful, are ...