The Dorothy Peyton Gray Transportation Library and Archive at the Los Angeles County Metropolitan Transportation Authority (LACMTA or Metro), 1890 to the present, is the largest transit operator research collection in the US. It is a partner of the National Transportation Library, a member of OCLC the world's largest library network (symbol = CRD), a member of the Western Transportation Knowledge Network, a member of the Getty/USC LAasSubject archives forum, and an affiliate of the National Academies Transportation Research Board. We are a strong advocate of using social media tools to connect communities and research. For more information, visit www.metro.net/library or email us library@metro.net