The Reuben Wells is a steam locomotive in the permanent collection of The Children's Museum of Indianapolis located in Indianapolis Indiana United States. Beginning in 1868 it operated for 30 years in Madison Indiana pushing train cars up the steepest standard-gauge main-track grade in the United States. Given a list of categories: company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work, what category does the paragraph belong to?
A:
Mean Of Transportation