1. OCLC. Internal Revenue Service [Fiscal 2015]
2. OCLC. Internal Revenue Service [Fiscal 2014]
3. OCLC. Internal Revenue Service [Fiscal 2013]
4. OCLC. Internal Revenue Service [Fiscal 2012]
5. OCLC. Internal Revenue Service [Fiscal 2011]
6. OCLC. Internal Revenue Service [Fiscal 2010]
7. OCLC. Internal Revenue Service [Fiscal 2009]
8. OCLC. Internal Revenue Service [Fiscal 2008]
9. OCLC. Internal Revenue Service [Fiscal 2007]
10. OCLC. Internal Revenue Service [Fiscal 2006]
11. OCLC. Internal Revenue Service [Fiscal 2005]
12. OCLC. Internal Revenue Service [Fiscal 2004]
13. OCLC. Internal Revenue Service [Fiscal 2003]