In the late 1830s and ’40s, telegraph lines expanded alongside new railroad tracks and created new professional opportunities for women. Later, as men were drafted into the military during the Civil War, more than 100,000 women took their places. Early pioneer women telegraphers were still the exception rather than the rule, but they blazed a trail for women to follow in the century of progress to come. Patricia LaBounty, a curator at the Union Pacific Railroad Museum, explores the complex and exciting world of women working on the railroad in the United States.