Allegheny Portage Railroad was created in 1831.
Oregon Central Railroad was created in 1867.
Allegheny Portage Railroad ended in 1857.
Oregon Slough Railroad Bridge was created in 1908.
Oregon Short Line Railroad was created in 1897.
Nevada-California-Oregon Railroad Depot was created in 1910.
Oregon Short Line Railroad Depot was created in 1907.
Portage College was created in 1968.
Portage Bridge was created in 1973.
Portage Theater was created in 1920.
Portage la Prairie was created in 1851.
Portage Lake Observatory was created in 1948.