- *Library Online Catalog: librarycat.metro.net – Search our collection
- HistoryPin: Metro Library and Archive
- Instagram: Metro Archive
- Metro Library Flickr Online Photo Collection
- Metro Library on Facebook
- Metro Library on Tumblr
- Metro Library on Twitter
- Metro Library YouTube Channel
- Online Archive of California Collection
- PeoplePltr: Family tree of predecessor transit providers
- TikiToki: LA Transportation History Timeline
Transit & Transportation Research and History Resources
- *Transportation Research Information Database (TRID) Transportation Research Board
- APTA Historical Archives (George Mason University)
- California Center For Innovative Transportation (UC Berkeley)
- California Center for Sustainable Energy
- California Partners For Advanced Transit And Highways, Berkeley Institute Of Transportation Studies
- Caltrans Transportation Library & History Center
- Global Metropolitan Studies, UC Berkeley Institute Of Urban And Regional Development
- Institute For Transportation & Development Policy
- Metropolitan Transportation Commission Library (San Francisco Bay Area)
- Mineta Transportation Institute
- National Center for Bicycling & Walking
- National Transportation Library Sources of Information In Transportation
- Northwestern University Transportation Library
- OECD Online Access to Global Transport Knowledge
- RAND Corporation Transportation and Infrastructure
- Safe Transportation Research & Education Center, UC Berkeley
- Texas A&M Texas Transportation Institute
- The World Bank: Transport
- Tranzinfo: The Australian And New Zealand Network Of Transport Libraries
- TRB Online International Transport Sources
- U.S. National Transportation Library
- U.S. National Transportation Library Directory of Transportation Libraries and Information Centers
- U.S. RITA University Transportation Centers
- U.S. Transportation Research Board
- UC Berkeley Transportation Sustainability Research Center
- UC Irvine Institute of Transportation Studies
- UCLA Institute of Transportation Studies
- University Of California Institute Of Transportation Studies Transportation Library
- University of California Transportation Center
- University Of Michigan Transportation Research Institute
- University Of South Florida National Center For Transit Research
- USC Archives: The Red Cars of Los Angeles
- USC/CSULB METRANS University Transportation Centers Custom Search
- Victoria Transport Policy Institute
- Volpe National Transportation Systems Center