Baltimore & Ohio Railroad, Thomas Viaduct, Spanning Patapsco River, Elkridge, Howard County, MD Closer in aerial view looking southeast. Photo taken in 1977.
Baltimore & Ohio Railroad, Thomas Viaduct, Spanning Patapsco River, Elkridge, Howard County, MD Closer in aerial view looking southeast. {{LOC-image|id=hhh.md0802}} == Licensing == {{HAER|HAER MD,14-ELK,1}}
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