MRGRRBK BPL RB
 
Union Switch & Signal Co.
Railway Electrical Safety Appliance.: [Circular]...
Pittsburgh: : Jos. Eichbaum & Co. Printers...,; 1881.
2, (31) ps # TLL. ¢ 24 cm. & 25.5 cm.
Cover title page.
Two copies, one has 22 pages, the other 3 pages.
1. Railroads--Switches. Dx Railroads--Signaling. 3. Advertising flyers. I. Westinghouse, George, Jr., pres. II. Bagaley, Ralph, vice-pres. III. Title.
ocm30982745