Conducting research about the IR&N requires many interested and dedicated people looking in many institutions that often contain the desired information in other larger collections that do not necessarily indicate the IR&N or any of its successive owners in the holdings. Here a list of repositories which are known to have pieces of the “Clamshell Railroad” puzzle.
List of Repositories:
- California State Railroad Museum, Sacramento, CA – images, archives
- Chicago History Museum, Chicago, IL – images, archives
- Clatsop County Historical Society, Astoria, OR – images
- Columbia River Maritime Museum, Astoria, OR – images, archives
- Delaware State Archives, Wilmington, DE – images, Jackson & Sharp archives
- Illinois Railway Museum, Union, IL – plans, drawings
- Interstate Commerce Commission, Washington, D. C. – archives
- National Museum of American History, Washington, D. C. – images, archives
- Newberry Library, Chicago, IL – Pullman archives
- Oregon Department of Transportation, Salem, OR – images, archives
- Oregon Historical Society, Portland, OR – images, archives
- Pacific County Historical Society, South Bend, WA – images
- Pacific County Records, South Bend, WA – archives
- Society for Preservation of Carter Railroad Resources, Fremont, CA – images, archives
- Union Pacific Historical Society, Omaha, NE – drawings, archives
- University of Oregon Library, Eugene, OR – images
- University of Washington, Special Collections Library, Seattle, WA – images, archives
- Utah State Historical Society, Salt Lake City, UT – images, archives
- Washington State Highway Department, Olympia, WA – archives
- Washington State Historical Society, Tacoma, WA – images, archives
- Washington State Library, Tacoma, WA – archives
- Washington State Parks and Recreation Commission, Olympia, WA – images, archives
- Washington State Railroad Commission, Olympia, WA – archives
