Because of the low density of its population and subsequent low property tax support, library service in Oklahoma is based on the multicounty library operating as a single unit. With the help of federal funds, such units now cover one-third of the state and 60 percent of its population utilizing branch libraries and bookmobile service. Service to children has a high priority. The Oklahoma Department of Libraries conducts workshops on all aspects of children's services and undertakes those services which can be done most efficiently on a large scale or a comparative basis. A good example is the Children's Statewide Summer Program in which system and nonsystem libraries of all sizes participate. The Department of Libraries also works to establish juvenile collection standards, to provide interlibrary loan service to children as well as adults, and to stimulate local libraries through the distribution of exhibits and 16mm films. (SL)