In January 1936, the highway department in Nevada began publishing "Nevada Highways and Parks," a magazine that filled much of the same role as the Web sites that today caution drivers about road closures and construction projects.Three-quarters of a century later, the publication now known as "Nevada Magazine" leaves mundane matters such as road closures to other media while it focuses on the glories that await visitors to the Silver State.Publisher Janet Geary says the magazine, an entirely self-supporting division of the Nevada Commission on Tourism, has a straightforward mission: To encourage travel within the state.About 40 percent of the …