IU's yearbook, the Arbutus, is shelved in the Reference Reading Room on the ground floor of the east tower of the Wells Library. You can see a full list of years and locations in the main IUCAT record. Some years are available online, or at other locations as well -- see a full list of options for accessing the Arbutus in this IUCAT search: http://go.iu.edu/dYE
Indiana residents who are not affiliated with Indiana University can request a library guest account to borrow books and access online databases. Here are the details on where and how to get an account: http://libraries.iub.edu/library-guest-account
The library does not have access to case studies published by business schools (such as Harvard Business School case studies), but articles about particular case studies can be found using business journal indexes like ABI/INFORM and Business Source Premier. Here is information on how to order case studies written for educational purposes from schools like Harvard:
Here is a library research guide which lists those databases, in the collection, where one can determine how many times an author's article has been cited in the professional literature: http://libraries.iub.edu/cited
Links to SCOPUS, Web of Science, ABI/INFORM, EBSCO ACADEMIC SEARCH, Google Scholar, Google Scholar Citations, and Publish or Perish are among the databases included.
Visitors to the Libraries may request a Library Guest Account to allow them full access to subscription databases and library resources from inside the IU Bloomington Libraries; read more at http://libraries.iub.edu/library-guest-account