Short biographical sketches of trailblazers in all fields, -- medicine, printing, science, teaching, invention, astronomy, machinery, photography, transportation, and so on. A brief glance down the table of contents, and the eighteen famous names will show how valuable a book this should be on public and school library reference shelves. The individual sketches are vivid and there is enough of story and fact to hold interest. Includes, among others, -- Hippocrates, Aristotle, Archimedes, Gutenberg, da Vinci, Newton, Watt, Audubon, Pasteur, Roentgen, Madame Curie, Edison, Ford, the Wright Brothers, and so on. Pioneers all.