MRGRRBK BPL RB
Union Switch and Signal Co. Operating railroad signals automatically... : Frogs, crossings switches... -- [Boston : s.n., 1881
[i] card #8 x 23 em:
1. Railroads--Signaling. a Railroads--Switching. 3. Railroads-- Crossings. 4. Advertising cards. Tex Snyder, Henry, General agent. Lbs Westinghouse, George, Jr., pres. 1 a es Jackson, C. H., General manager. Iv.
Title; 4 ocm29787529 000859