Author Robert T. McMaster will discuss his latest book, "All The Light Here Comes From Above: The Life and Legacy of Edward Hitchcock."

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Edward Hitchcock (1793-1864) was a geological pioneer. A native of Deerfield, Massachusetts, he was the first State Geologist of Massachusetts, the first American geologist to publicly embrace the theory of continental glaciation, and the first scientist to unearth evidence of dinosaurs in North America. McMaster's book, "All the Light Here Comes from Above: The Life and Legacy of Edward Hitchcock," is the first biography ever written of Hitchcock, who was one of 19th-century America's most influential scientists.