Michigan Central Railroad ended in 1976.
Michigan Central Station ended in 1988.
Michigan Car Company ended in 1892.
Keithsburg Bridge Company ended in 1901.
Railroad Bridge Company ended in 1866.
Quincy Bridge Company ended in 1866.
Sibley Bridge Company ended in 1900.
Pee Dee Bridge Company ended in 1915.
Detroit River Bridge Company ended in 1905.
Mercer County Bridge Company ended in 1885.
Quincy Railroad Bridge Company ended in 1903.
Wisconsin Central Company ended in 1899.