The classifications given by railroads to their steam locomotive fleets were as varied as the machines themselves with several different designations within a particular class! As for the Lehigh and Hudson River Railway steam locomotives there were not many (a little over 60 ever owned) since the railroad was rather small. However, the L&HR did own some some rather large steamers for its size, small fleets of 4-8-2 Mountains and 2-8-2 Mikados. Today, none of the railroad's largest steamers are known to exist and sadly, none at all are known to be preserved.
In any event, the information here is merely meant to list the general types of steam locomotives operated by the L&HR and does not go into detail about their specific differences. A few additional points about the L&HR's steam fleet: first was that its entire fleet was built by the Baldwin Locomotive Works; second was that the railroad in later years rebuilt some of its 4-4-0 Americans, 2-6-0 Moguls, and 2-8-0 Consolidations into Camelbacks (whereby the cab was moved to the center of the boiler to allow for the Wootten firebox, a patented design that allowed for the use of anthracite coal waste, known as culm, to be used as a fuel source for locomotives), which are listed below.
4-4-0 Americans #1 - 7: Built by Baldwin Locomotive Works.
4-4-0 Camelback #8: Built by Baldwin Locomotive Works.
2-6-0 Camelback #9: Built by Baldwin Locomotive Works.
2-8-0 Camelback #10 - 12 (Original): Built by Baldwin Locomotive Works.
4-8-2 Mountain #10 - 12 (Renumbered): Built by Baldwin Locomotive Works.
0-6-0 Switcher #15 (Renumbered): Built by Baldwin Locomotive Works.
4-6-0 Ten-Wheeler #20: Built by Baldwin Locomotive Works.
4-6-0 Camelback #23 - 34: Built by Baldwin Locomotive Works.
2-8-0 Camelback #50 - 69: Built by Baldwin Locomotive Works.
2-8-2 Mikados #70 - 73, #80 - 83: Built by Baldwin Locomotive Works.
2-8-0 Consolidation #90 - 95: Built by Baldwin Locomotive Works.
For a colorful look at Lehigh and Hudson River Railway steam locomotives and the railroad itself you might want to consider the book Lehigh & Hudson River In color: History and Operations of the L&HR 1860-1976 from famed author Jim Boyd. The book is filled with rare color photographs of the railroad and Mr. Boyd well documents the railroad’s famed fleet of Alco (American Locomotive Company) diesels. So, if you have any interest in the L&HR or want to learn more about this rather unknown classic fallen flag I would highly recommend Mr. Boyd’s book. If you're interested in perhaps purchasing this book please visit The Railroad Diamond by clicking the tab in the menu to your left marked "TRD Store".