sentences:  The line was profitable and traffic volume was such that additional locomotives were necessary.The Ma and Pa acquired two 0-6-0 Baldwin switchers in 1913, #29 and #30 "(pictured)", called "jewels of engines, in some respects the most attractive the road had", by writer George Hilton in "The Ma & Pa – A History of the Maryland & Pennsylvania Railroad".The next year, three 2-8-0 "Consolidations" by Baldwin were added to the roster, providing more powerful locomotives for the Baltimore–York through freights.