To determine on which levels of cooperation most media specialists and public librarians function, and whether or not the cooperation is satisfactory, a survey was conducted of libraries and school media specialists in the Atlanta-Fulton County and Gwinnett County (Georgia) areas. Questionnaires (152) were mailed to 115 school library and media specialists and 37 public librarians, with an 83 percent response rate. Data collected were analyzed using the Statistical Package for the Social Sciences. A chi square analysis compared media specialist and public librarian responses. Most school library media specialists and public librarians participate in some cooperative activities with each other. Summer reading programs were the cooperative activities most frequently identified by both public librarians and school library media specialists. A statistically significant correlation was shown between the level of satisfaction and the type of library, with public librarians indicating greater satisfaction. Eighty-one percent of school library media specialists and 72.7 percent of public librarians identified lack of time as the major obstacle to interlibrary cooperation. Most cooperation between the two groups was on an informal communication level. Six tables present study findings. Five appendixes contain a model for cooperation, both questionnaires, and both cover letters. (Contains 14 references.) (SLD)