Photo of Construction Number 5001 showing left side of Heisler Locomotive Works 60 ton Diesel Electric Locomotive at Erie, Pennsylvania, 1931. The locomotive is being demonstrated at the Perry Iron Company at Erie.

Photo of Construction Number 5001 showing left side of Heisler Locomotive Works 60 ton Diesel Electric Locomotive at Erie, Pennsylvania, 1931. The locomotive is being demonstrated at the Perry Iron Company at Erie.

Photo of Construction Number 5001 showing right front of Heisler Locomotive Works 60 ton Diesel Electric Locomotive at Erie, Pennsylvania, 1931. The locomotive is being demonstrated at the Hammermill Paper Company at Erie. Photograph by Schauble.

Photo of Construction Number 5001 showing left front of Heisler Locomotive Works 60 ton Diesel Electric Locomotive at Erie, Pennsylvania, 1931. The locomotive is being demonstrated at the Hammermill Paper Company at Erie. Photograph by Schauble.

Photo of Construction Number 5001 showing left front of Heisler Locomotive Works 60 ton Diesel Electric Locomotive at Erie, Pennsylvania, 1931. The locomotive is being demonstrated at the Hammermill Paper Company at Erie. Photograph by Schauble.

Photo of Construction Number 5001 showing right side of Heisler Locomotive Works 60 ton Diesel Electric Locomotive at Erie, Pennsylvania, 1931. The locomotive is being demonstrated at the Hammermill Paper Company at Erie. Photograph by Schauble.

Photo of Construction Number 5001 showing right side of Heisler Locomotive Works 60 ton Diesel Electric Locomotive at Erie, Pennsylvania, 1931. The locomotive is being demonstrated at the Hammermill Paper Company at Erie.

Builders photo of Construction Number 5001 showing right front of Heisler Locomotive Works 60 ton Diesel Electric Locomotive at Erie, Pennsylvania, 1931. Photograph by Schauble.

Builders photo of Construction Number 5001 showing right side of Heisler Locomotive Works 60 ton Diesel Electric Locomotive at Erie, Pennsylvania, 1931. Photograph by Schauble.

Photo of Construction Number 5001 showing right rear of Heisler Locomotive Works 60 ton Diesel Electric Locomotive at Erie, Pennsylvania, 1931. The locomotive is undergoing performance testing by pulling a string of loaded hopper cars with testing by New York Central Railroad dynamometer car Number X8006 at Erie. Photograph by Schauble.