Douglas L. Heath worked as a hydrogeologist at the US Geological Survey and US Environmental Protection Agency (EPA) for thirty years. He is also an experienced genealogist, local historian, and photographer in using nineteenth-century glass plate methods.
Alison C. Simcox currently works in EPA's air quality program as a specialist in particle pollution and biomass energy. In her free time, she enjoys playing soccer, bicycling, running and ocean kayaking.
Tom Beyer is a character actor who has appeared in over 100 TV shows, films, and commercials; has performed in innumerable plays and musicals; and has narrated many audiobooks. He has won awards for his stage work as both an actor and a director, and has adapted classical literature for the theater.