"New history" added to a place or museum always feels like discovery. When it feels like a fight is when elements of that expanded history directly challenge the previous views of a beloved narrator. H. Roger Grant, in his recounting of Iowa's 1910 Green Mountain train disaster was wrong regarding the train composition. Photographic evidence shows that. But because Grant is such a revered figure in the railroad community, pointing out that he was wrong generates some level of backlash.