In collaboration with Colorado River Days, we are proud to welcome Tom Martin for this month’s presentation. Norm Nevills guided Otis “Dock” Marston on Marston’s first river trip through the Grand Canyon in 1942. Marston and Nevills boated together on river trips in the 1940s including during the war years. They boated Cataract Canyon, Gates of Lodore, Main Salmon, and Hells Canyon on the Snake. Their last trip together, through Grand Canyon in 1948, occurred before Nevills died in 1949. By then, the National Park Service had set the foundation for river regulation and Dock was well on his way to becoming the foremost historian of the Colorado River. Meanwhile, those who knew Nevills well watched him with growing concern.