In June of 2016 the University of Michigan Library (U-M Library) and Knowledge Unlatched (KU) began a collaboration “to study and overcome remaining obstacles to the spread of open access scholarly publishing in the humanities and social sciences.” The first product of this partnership was a survey of academic librarians in the United States conducted by Christopher Barnes, PhD, a fellow at U-M Library and an LIS student in the School of Information. The survey, released in November 2016, targeted librarians involved in the decision-making process behind participation in open access (OA) initiatives targeting monographs in the humanities and social sciences (HSS). Librarians considering joining an OA initiative, or who have declined to join, were all encouraged to participate. The goal was to determine the major impediments to the scalability of initiatives like KU from the perspective of collections staff, both in terms of increasing the number of participating libraries and the percentage of OA HSS monographs in their collections. Dr. Barnes conducted a series of follow-up interviews in early 2017 to add context and nuance to the survey responses. The final project report is now available from Deep Blue and from the KU Research website.