Lehigh Valley Steam Locomotives: History, Roster & Photos

Published: September 21, 2026

Lehigh Valley steam was an anthracite railroad’s answer to a profile that never quite justified a Berkshire. Westbound the main stayed under one percent. Eastbound the ruling grade was about 1.2 percent, except where the Mountain Top summit and the climb out of Wilkes-Barre pushed passenger trains near 1.8 percent. The freight answer, for fifty years, was the Consolidation, then the Mikado, then a big fleet of 2-10-2s. The passenger answer stopped at the Pacific until 1931, when the Valley gave its 4-8-4s a name of its own: Wyoming.

George H. Drury, in Guide to North American Steam Locomotives, is the post-1900 class grid below. He also credits this railroad with originating three wheel arrangements in the nineteenth century: the 2-8-0, the 4-8-0, and the 2-10-0.

Lehigh Valley 2-8-2 425 class N-4 at work under the signal bridge in Easton Pennsylvania in the fall of 1948

Lehigh Valley 2-8-2 #425, class N-4, under the signal bridge at Easton, Pennsylvania, in the fall of 1948. John Maris photo. Baldwin, 1923. Sister Mikado 432 made the last steam run on September 14, 1951.

On this page: At a glance · Before 1900 · Camelbacks · Mikados, Santa Fes, Mountains · Wyomings · Atlantics, Ten-Wheelers, Pacifics · Switchers · September 14, 1951 · All-time roster (built since 1900)

At a glance

Item	Detail
Railroad	Lehigh Valley Railroad. Mark LV. Company Lehigh Valley
This roster	Engines built since 1900, after Drury, pages 197–200. Pre-1900 power is in the narrative
Fuel and cabs	Anthracite and Camelbacks well into the twentieth century. Wide fireboxes, then a turn to conventional cabs
Freight after 1912	Camelback 2-8-2s, then conventional Mikados through the N-5B. Seventy-six R-1 2-10-2s. Twenty of those became N-6 Mikados
Mountains	Six 4-8-2s, 5000–5005, class S-2, 1923–24, three cylinders as built
Wyomings	37 4-8-4s, T-1, T-2, T-2B, T-3, 1931–35. The Valley’s name for the type. Photo of the type is not on this page; the Easton Mikado is the steam frame the company page had
Pacifics	K-1 through K-6B. K-6B 2088–2099 the largest. Three of them shrouded, Kuhler styling, 1939–40. Engines 2101 and 2102 shrouded in 1938
Last steam	September 14, 1951. Mikado 432, Delano, Pennsylvania
Shops	Sayre, Pennsylvania. Sayre built and rebuilt a large share of the post-1900 fleet, including the two extra K-6B Pacifics

Class table follows Drury, Guide to North American Steam Locomotives (revised edition), page 200. Information compiled September 21, 2026.

The Consolidation, and two other wheel arrangements

Drury’s chapter opens on the map and then on a nineteenth-century claim. The Lehigh Valley, he writes, originated the 2-8-0, the 4-8-0, and the 2-10-0. The famous piece of that sentence is the Consolidation: Baldwin’s 2-8-0 of 1866 for this railroad, built while the anthracite lines were being gathered into one company, and the locomotive that gave the type its name. One of the Valley’s two early Decapods was later rebuilt as a 2-8-2 and then as a 2-8-0. The other became a 4-8-0. Those engines are older than this table.

So is the first locomotive, a Norris 4-4-0 named Delaware, bought in 1855 for the new Mauch Chunk–Easton railroad. Nineteenth-century power was a mix of Americans, Ten-Wheelers, and an ever-larger Consolidation fleet burning culm in wide fireboxes. The 1905 renumbering is why the modern class list uses the numbers below. Drury prints the post-1900 grid; the 1905 numbers are the ones in the table.

Camelbacks, then a change of mind

Anthracite wanted a wide firebox. A wide firebox wanted the cab ahead of it. The Valley was still buying Camelbacks in quantity after 1900: 0-6-0s, 0-8-0s, 2-8-0s, 2-8-2s, Atlantics, and Ten-Wheelers. Class G-14 was thirty-three Camelback six-wheel switchers, 3420–3452, Baldwin and Sayre, 1907–1914, and some of them lasted until the end of steam. The M-35 Consolidations, 102 engines numbered 700–769 and 780–812, were Baldwin Camelbacks of 1899–1902 and are in the “since 1900” table because the class straddles the century.

The first Mikados on the road were Camelbacks, and Drury calls them the only Camelback 2-8-2s. Class I-1, 2230–2239, Baldwin 1902, and the much larger N-1 class, 47 engines in the 220–246 series, Baldwin and Schenectady, 1903–1907, are those engines. They were gone by the early 1930s. The railroad had already decided the next freight engine would be a conventional Mikado.

Drury notes a short experiment the other way. In the nineteenth century the Valley had a reputation for trying wheel arrangements, including two Decapods that did not stay Decapods. After the turn of the century it tested freight engines on trailing trucks, found them slow, and went back to rigid-frame Consolidations before the Mikado finally stuck. It was the only eastern anthracite road, in his telling, that moved from Camelbacks to a conventional cab as a policy rather than one locomotive at a time.

From the N-2½ to the Santa Fe, and six Mountains

The modern Mike begins with Baldwin’s N-2½ class, 300–341, in 1912 and 1913. They were not Camelbacks. They weighed about 294,810 pounds and were rated at 43,031 pounds of tractive effort, with 56-inch drivers in the earlier group’s dimensions as Drury gives them for the first of the conventional 2-8-2s. Later N-3s (350–394, 1913 and 1916) and N-4s (395–434, plus the five N-4Bs 460–464) grew the boiler and the cylinders. The N-4 and N-5 Mikes of 1923–24 were the largest two-cylinder freight engines Sayre maintained in quantity: 27 × 32-inch cylinders, 63-inch drivers, and, on the N-5Bs, a booster. Schenectady built the fifty-five N-5Bs, 440–459 and 465–499.

The 2-10-2 was the Valley’s bid for a still heavier road engine. Baldwin delivered the R-1 class, 4000–4075, seventy-six engines, in 1917 and 1919. They were large, and twenty of the highest-numbered ones were more than the railroad wanted to keep. In 1920 engines 4060–4075 went to the Hocking Valley. In 1928 and 1929 Sayre rebuilt twenty R-1s into N-6 Mikados, 275–294. The N-6s were lighter and less powerful than the USRA heavy 2-8-2, with 63-inch drivers and 27 × 32-inch cylinders. When mainline freight shifted to the 4-8-4, the N-6s were the first of the rebuilt Mikes to go, between 1939 and 1949. The remaining Santa Fes lasted until 1948–51.

Between the Santa Fe and the Wyoming the Valley tried the Mountain, briefly. In 1923 and 1924 it bought six 4-8-2s, 5000–5005, class S-2, built as three-cylinder engines on the idea of the New York Central’s three-cylinder L-1. They were the only Mountains the roster carried. They were out of service by 1950–51, before the last Mikado.

1931: the Wyoming

In 1931 the road took one 4-8-4 from Baldwin and one from Alco and named the type for the Wyoming Valley. Baldwin’s engine was 5100, class T-1, with 70-inch drivers and 27 × 30-inch cylinders. Alco’s was 5200, class T-2. The two were the same size of engine. The Baldwin weighed 413,170 pounds and was rated at 66,400 pounds of tractive effort. The Alco weighed 422,700 pounds, on the same cylinder dimensions, and was rated at 66,390. Drury thought the Wyomings the best freight engines the Valley owned.

The follow-on orders filled the type out to thirty-seven locomotives. Baldwin’s T-1s are 5100–5110, eleven engines, 1931–32. Alco-Schenectady’s T-2s are 5200–5210 and the T-2Bs are 5211–5220, twenty-one engines in the two subclasses. In 1934 and 1935 Baldwin added five more, 5125–5129, class T-3, with 77-inch drivers and an eye on passenger trains. They rarely got passenger work. They did get milk trains, where the high drivers were useful. Drury’s line on that job is that a slow milk train can quickly become a yogurt train. The T-3s were gone by 1951–52, with the rest of the Wyomings. None was preserved.

The type page is the 4-8-4. This roster does not dump it. What belongs here is that the Valley’s 4-8-4 was a freight engine with a local name, built in the same years other eastern roads were buying Berkshires, and that Sayre maintained all thirty-seven until dieselization made them redundant at once.

Dual-service Pacifics, and three shrouded K-6Bs

Passenger power in the twentieth century was dual-service more often than it was a pure express engine. The Ten-Wheelers carried 69-inch drivers. Class J-25, thirty-five engines from Sayre, was the high-driver exception, with 77-inch wheels. The big block is J-55, J-55A, and J-57, 105 locomotives numbered 1590–1694. J-56 and J-57 were the conventional-cab 4-6-0s. The J-56½s were Sayre’s own, built in 1917 and 1918. A separate J-54/A group of seven, 1550–1556, sits beside them in the table.

Atlantics were the earlier express engine. F-3s 2400–2416, seventeen engines from Baldwin and Schenectady, 1903–1910, were later classed F-5. Eight F-4s, 2460–2467, were Baldwins of 1900–1901. The F-6s, 2475–2479, were the last of the 4-4-2s in the grid. All of them were gone by the end of the 1920s, replaced by Pacifics.

The Pacific story is a long rebuild as much as a buying program. K-2s, ten engines, were rebuilt in 1916. K-3s and the dual-service machines numbered 2100–2149 came from Baldwin between 1916 and 1919: K-5s 2100–2129 and K-5½s 2130–2149 in the class table. They had 73-inch drivers. Engines 2101 and 2102 were streamlined in 1938. The largest Pacifics were the K-6Bs. Brooks built 2090–2099 in 1924. Sayre added 2089 in 1925 and 2088 in 1926, the latter rebuilt from K-3 2025. They had 77-inch drivers, weighed 291,000 pounds, and exerted 41,534 pounds of tractive effort; a booster was worth about another 10,000 pounds. In 1939 and 1940 three of them were shrouded for the streamliner program Otto Kuhler had already begun on the Asa Packer and the John Wilkes. Those trains, and the Black Diamond’s own shrouded Pacific, are the Black Diamond page.

There was no Hudson. Drury is plain that the Valley stopped passenger development at the Pacific, aside from the five high-driver T-3s that never really became passenger engines.

Sayre’s switchers

The yard engines are half the table, because Sayre kept rebuilding Consolidations into eight-wheel switchers instead of buying everything new. L-1s 3030 and 3031 were Baldwins of 1901 rebuilt from 2-8-0s. L-1½s 3000–3003 were Sayre rebuilds of 1920–21. The Camelback L-2s and L-3s, and fifty Camelback L-5s from Baldwin in 1911–16, filled the anthracite yards. L-5½s 3176–3210, thirty-four engines, were 2-8-0s rebuilt at Sayre between 1919 and 1929. Two of that number series, 3198 and 3199, were Camelbacks rebuilt again into K-2 Pacifics. M-38s and M-38½s, the 900s and 915–934, were further Consolidations cut down into 0-8-0s between 1919 and 1929.

Six-wheel switchers were the G-13s, three Baldwins of 1905, and the G-14 Camelbacks. The last G-14s were still on the property in 1951, in the same final season as the Wyomings.

September 14, 1951

Road diesels arrived late and then all at once. Four two-unit FTs came in 1945 for helper service. The 1948–51 buying program—F3s, F7s, FAs, PAs, Baldwins, Alco road-switchers—is the diesel roster. Drury gives the last steam run to Mikado 432 on September 14, 1951. The fire was dropped at Delano, Pennsylvania, on the old coal-country end of the railroad rather than at Sayre. No Lehigh Valley steam locomotive was kept.

All-time roster (built since 1900)

Classes built since 1900, after Drury, page 200. Where a class was rebuilt from an older wheel arrangement, the built date is the rebuild. Quantities are Drury’s. A few number spans in the book are not a continuous count; the quantity column is the class total.

Type	Class	Numbers	Qty	Builder	Built	Retired	Notes
0-6-0	G-13	3400–3402	3	Baldwin	1905	1931, 1932
0-6-0	G-14	3420–3452	33	Baldwin, LV	1907–1914	1930–1951	Camelback
0-8-0	L-1	3030, 3031	2	Baldwin	1901	1926	Rebuilt from 2-8-0s
0-8-0	L-1½	3000–3003	4	LV	1920, 1921	1923, 1924	Rebuilt from 2-8-0s
0-8-0	L-2	3033–3049	17	LV, Baldwin, Schenectady	1902–1910	1929–1936	Camelback
0-8-0	L-3	3050–3069	20	LV, Baldwin, Schenectady	1905–1910	1931–1940	Camelback
0-8-0	L-4	3100–3104	5	LV	1912	1928–1938
0-8-0	L-5	3115–3174	50	Baldwin	1911–1916	1932–1951	Camelback
0-8-0	L-5½	3176–3210	34	LV	1919–1929	1929–1951	Rebuilt from 2-8-0s
0-8-0	L-5½	3198, 3199	2	LV	1908	1926, 1932	Camelback, rebuilt to K-2
2-8-2	I-1	2230–2239	10	Baldwin	1902	1916–1951	Camelback
2-8-0	M-35	700–769, 780–812	102	Baldwin	1899–1902	1916–1951	Camelback
2-8-0	M-36	813–832	20	Schenectady	1907	1926–1945	Camelback
2-8-0	M-36½	816, 820, 826, 828	4	Schenectady	1907	1926, 1930	Camelback
2-8-0	M-37	950–954	15	Baldwin	1899, 1900	1923–1932	Camelback
2-8-0	M-38	915–934	20	LV	1912, 1913	—	Rebuilt to 0-8-0, 1924–1929
2-8-0	M-38½	900–914	15	LV	1909–1910	—	Rebuilt to 0-8-0, 1919–1929
2-8-2	N-1	220–246	47	Baldwin, Schenectady	1903–1907	1924–1932	Camelback
2-8-2	N-2½	300–341	42	Baldwin	1912, 1913	1938–1951
2-8-2	N-3	350–394	45	Baldwin	1913, 1916	1937–1951
2-8-2	N-4	395–424	30	Baldwin	1916–1922	1938–1951
2-8-2	N-4	425–434	10	Baldwin	1923	1948–1951	Photo: 425 at Easton, 1948
2-8-2	N-4B	460–464	5	Baldwin	1923	1948–1951
2-8-2	N-5B	440–459, 465–499	55	Schenectady	1923, 1924	1947–1951
2-8-2	N-6	275–294	20	LV	1928, 1929	1939–1949	Rebuilt from 2-10-2s
2-10-2	R-1	4000–4075	76	Baldwin	1917, 1919	1948–1951	4060–4075 to Hocking Valley, 1920. Twenty rebuilt to N-6 in 1928–1929
4-4-2	F-3	2400–2416	17	Baldwin, Schenectady	1903–1910	1923–1929	Later F-5
4-4-2	F-4	2460–2467	8	Baldwin	1900, 1901	1923–1928
4-4-2	F-6	2475–2479	5	Baldwin	—	—
4-6-0	J-25	1131–1165	35	Sayre	—	—	77-in drivers
4-6-0	J-54/A	1550–1556	7	Baldwin	—	—
4-6-0	J-55, J-55A, J-57	1590–1694	105	Baldwin, Schenectady, Sayre	1900–1918	—	J-56 and J-57 conventional cabs. J-56½ built at Sayre, 1917–1918
4-6-2	K-1	1800–1820	21	Baldwin	1905–1906	—
4-6-2	K-2	2000–2007	10	Baldwin	1906	—	Rebuilt 1916. 2004–2006 later rebuilt toward K-3
4-6-2	K-2½	2010–2020	11	Baldwin	1913–1914	—
4-6-2	K-3	2021–2035	15	Baldwin	1917–1921	—	2025 rebuilt to K-6B 2088
4-6-2	K-4	2050–2064	15	LV	1915–1917	—
4-6-2	K-5	2100–2129	30	Baldwin	1916–1917	1938–1951	Dual-service. 73-in drivers
4-6-2	K-5½	2130–2149	20	Baldwin	1916–1919	1938–1951	2101 and 2102 streamlined in 1938
4-6-2	K-6B	2088–2099	12	Brooks, LV	1924–1926	1950–1951	2090–2099 Brooks 1924. 2089 Sayre 1925. 2088 Sayre 1926, rebuilt from K-3 2025. Three shrouded 1939–1940. 77-in drivers, 41,534 lb tractive effort
4-8-2	S-2	5000–5005	6	Baldwin	1923–1924	1950–1951	Three-cylinder as built
4-8-4	T-1	5100–5110	11	Baldwin	1931–1932	1950–1951	Wyoming. 5100 was the 1931 Baldwin sample. 70-in drivers
4-8-4	T-2	5200–5210	11	Schenectady	1931–1932	1950–1951	Wyoming. 5200 was the 1931 Alco sample
4-8-4	T-2B	5211–5220	10	Schenectady	1931–1932	1950–1951	Wyoming
4-8-4	T-3	5125–5129	5	Baldwin	1934–1935	1951–1952	Wyoming. 77-in drivers, intended for passenger work, used on milk and freight

Sources

George H. Drury, Guide to North American Steam Locomotives, revised edition, pp. 197–200. Class table transcribed from the author’s copy.
Drury on the last steam run: Mikado 432, September 14, 1951. Delano is the standard account of where the fire was dropped.
Locomotive specifications in the Wyoming and K-6B text follow Drury’s chapter. K-6B starting tractive effort of 41,534 pounds agrees with the cylinder dimensions he prints (25 × 28, 215 pounds, 77-inch drivers).

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