Lima Locomotive Works supplied the Peoria & Eastern's three representatives of class L-1d, 4-8-2s Nos. 46-48, in 1918. These workhorses weighed 343,000 pounds and developed 54,080 pounds of tractive effort. By 1940 a booster tractive effort of 11,000 pounds was listed for members of this class so equipped. These engines had 69-inch drivers and 22x28-inch cylinders, and sustained a boiler pressure of 200 pounds per square inch. They had 4430 square feet of evaporative heating surface, 1212 square feet of superheater surface, and 66.8 square feet of grate area. Although some 0-8-0 switchers were newer, these Mohawks appear to have been the newest over-the-road motive power assigned to the Peoria & Eastern before World War II. No. 37 began life as the New York Central's No. 2670 and received its P&E number in 1937.