Given the question: Pick one category for the following text. The options are - company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work. Little Joe (Baltimore and Ohio locomotive) -  The C-16 class switchers were the last 0-4-0 steam locomotives built for the Baltimore and Ohio Railroad. They were assigned to the Baltimore Maryland Pratt Street Line along the Inner Harbor and to the Philadelphia Pennsylvania waterfront trackage. Initially constructed as saddle tank engines nos. 96 and 99 were given tenders in later years. After the saddle tank was removed in 1926 they were then given the classification of C-16A (Nos.
The answer is:
Mean Of Transportation