This collection consists of the sources that were used by the team writing the history of the mental health services in the Los Angeles city schools, now known as the Los Angeles Unified School District (LAUSD). The materials include memorandums, agendas, papers and reports, publications from organizations outside the LAUSD, annual reports, etc. Of special interest are the ledgers recording the referral and treatment of students at school mental health facilities, from the 1940s to the 1980s. Because of the confidential nature of their information, they are restricted. The ledgers are fragile and require special care.