[['class', 'wheel arrangement', 'fleet number (s)', 'manufacturer', 'serial numbers', 'year made', 'quantity made', 'quantity preserved'], ['mallet and simple articulated locomotives', 'mallet and simple articulated locomotives', 'mallet and simple articulated locomotives', 'mallet and simple articulated locomotives', 'mallet and simple articulated locomotives', 'mallet and simple articulated locomotives', 'mallet and simple articulated locomotives', 'mallet and simple articulated locomotives'], ['z', '2 - 6 - 6 - 2', '3000 - 3015', 'baldwin', '30566…31557', '1907', '16', '0'], ['z - 1', '2 - 6 - 6 - 2', '3100 - 3105', 'baldwin', '34389…34483', '1910', '6', '0'], ['z - 2', '2 - 8 - 8 - 2', '4000 - 4004', 'baldwin', '34382 - 34386', '1910', '5', '0'], ['z - 3', '2 - 8 - 8 - 2', '4005 - 4025', 'alco', '52839…62472', '1913 , 1917 , 1920', '21', '0'], ['z - 4', '2 - 8 - 8 - 2', '4500 - 4503', 'alco', '64373 - 64376', '1923', '4', '0'], ['z - 5', '2 - 8 - 8 - 4', '5000', 'alco', '67578', '1928', '1', '0'], ['z - 5', '2 - 8 - 8 - 4', '5000 - 5011', 'baldwin', '61292…61495', '1930', '11', '0'], ['z - 6', '4 - 6 - 6 - 4', '5100 - 5120', 'alco', '68760 - 68780', '1936 - 1937', '21', '0'], ['z - 7', '4 - 6 - 6 - 4', '5121 - 5126', 'alco', '69540 - 69545', '1941', '6', '0'], ['z - 8', '4 - 6 - 6 - 4', '5130 - 5149', 'alco', '70143…71962', '1943 - 44', '20', '0']]
in 1910 , Baldwin manufactured Class Z - 1 and Z - 2 with different Quantity Made
in [ENT] , [ENT] manufactured [ENT] [ENT] and [ENT] with different [ENT]