The public library must meet the needs of the community and the patrons it serves. One area of need is for genealogical materials to support the study of genealogy and family history. Because of the lack of information on the materials needed to make up a core collection of Ohio materials, a select group of 18 libraries and 15 genealogical societies were surveyed to identify appropriate materials for a core collection on Ohio genealogy. Twelve Ohio libraries and eight genealogical societies returned the surveys, for an overall response rate of 61%. This survey identified 48 titles to be included in such a core collection; these titles are included in this research paper. Also presented in the paper are discussions of the history of genealogy, collection development problems, and the availability of library literature on this topic. The methodology employed to conduct the survey and to tabulate the results is also described. A section on results explains the inclusion or exclusion of various titles based on tabulations and respondents' comments. A list of the materials that were analyzed in the survey, the genealogy core collection guide, and a ranked list of suggested works are appended. (38 references) (Author/MAB)