[['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']]
Baldwin manufactured (4) 4 different Class while Alco manufactured (6) 6 Class
[ENT] manufactured (4) 4 different [ENT] while [ENT] manufactured (6) 6 [ENT]