2 results containing "Railroad signal towers."
Interlocking signal station at Marshalltown, Ia.
c1899. | 1 photographic print | Detroit Publishing Co.
LOT 12701, no. 3 (H) <P&P> [P&P] | LC-USZ62-138248 (digital file from b&w film copy neg.)
Signal station and cross roads at Mazonia, Ill.
[between 1900 and 1905] | 1 negative | Detroit Publishing Co.
LC-D4-42367 <P&P> [P&P] | LC-DIG-det-4a20228 (digital file from original)