Portland Railroad Company Substation was created in 1911.
Portland Terminal Company was created in 1911.
Railroad Bridge Company was created in 1853.
Pretoria Portland Cement Company was created in 1892.
Portland Cordage Company Building was created in 1887.
Edison Portland Cement Company was created in 1899.
Allentown Portland Cement Company was created in 1906.
Maine Central Railroad Company was created in 1862.
Shelby Iron Company Railroad was created in 1865.
Jefferson Substation was created in 1909.
Neuhof Substation was created in 1985.
Utah Southern Railroad Extension Company was created in 1874.
Quincy Memorial Bridge was created in 1928.