Patron-initiated collecting via interlibrary has been examined regularly in the literature over the last decade, with articles examining the topic at public libraries, liberal arts colleges and large doctoral institutions. This paper examines a patron-initiated collection development program at Grand Valley State University (GVSU), a comprehensive university with an enrollment of 24,000 students. It compares GVSU's experiences with those at other types of institutions. The paper also discusses the different models used to assess the success of these programs within the literature and how GVSU used WorldCat Collection Analysis, circulation statistics and peer comparisons to assess its program.