Reference and collection management Information on reference, information services, local studies and collections for NSW public libraries. Stock quality health check The SQHC allows your library to assess the balance and diversity of your adult fiction collection. Reference and information services Reference and information services are key to the services provided to the community. The State Library can provide advice on reference and information services to library staff and local government. Diverse picture book collections Find out how to improve the diversity in your library’s children’s book collection. Local studies Local studies is a key public library service, an opportunity to provide access to resources unique to your local community. Show more