The potential development of information and referral (I&R) services in branch libraries was explored by examining five cases where such services have been initiated. The extent to which the public library system is appropriate for information and referral services was carefully examined in the light of its ability to carry on seven functions: (1) needs assessment, (2) development of the directory used to make referrals, (3) staffing, (4) publicity, (5) accessibility to users, (6) recordkeeping and follow-up, (7) relationship with other agencies. Five I&R services operating in five cities in the United States were chosen for the study. To a varying degree, each of four was library-affiliated; the fifth was not. Library sponsorship of I&R services was an asset from the standpoint of staffing, accessibility to users, and cooperative relationship with other agencies. It was neutral in terms of needs assessment, directory development, publicity, and record keeping. I&R services will necessitate extensive telephone use for referrals. It is anticipated that libraries will be able to make the adjustment. The study concludes with a discussion of possible roles of federal and state governments in developing I&R services in other cities. (Author/KC)