STARTING FROM THE ASSUMPTION that significantly expanded resource shar
ing will be a dominant feature of all twenty-first century libraries,
this article identifies five milestones or landmarks which can be used
to identify key tasks and chart progress. Joining a consortium, integ
rating intellectual access, providing for both physical and electronic
delivery of materials, and integrating the collection development pro
cess are steps illustrated with primary reference to the OhioLINK (OL)
experience. This article focuses on clearly identifying major issues
in resource sharing and illustrating possible solutions with actual ex
amples. The intent, however is to educate and facilitate ongoing discu
ssion rather than propose final answers.