Maryellen Vallier Sadovich (1926-2011) was a journalist and charter member of the Southern Nevada Historical Society. She was the Society's research secretary from 1964 to 1969 and was instrumental in uncovering the historical significance of the Spring Mountain Ranch, which led to the establishment of the Spring Mountain Ranch State Park. She wrote two books about Southern Nevada: Guide to Southern Nevada (1976) andThe Mysterious Valley Caliente, Nevada (2000). In addition, she also co-authored several other books about early Nevada.