1. OCLC. Internal Revenue Service [Fiscal 2018]
2. Open Library Foundation. Internal Revenue Service [Fiscal 2018]
3. OCLC. Internal Revenue Service [Fiscal 2017]
4. OCLC. Internal Revenue Service [Fiscal 2017]
5. OCLC. Internal Revenue Service [Fiscal 2017]
6. OCLC. Internal Revenue Service [Fiscal 2017]
7. OCLC. Internal Revenue Service [Fiscal 2016]
8. OCLC. Internal Revenue Service [Fiscal 2016]
9. OCLC. Internal Revenue Service [Fiscal 2017]
10. OCLC. Internal Revenue Service [Fiscal 2015]
11. OCLC. Internal Revenue Service [Fiscal 2015]
12. OCLC. Internal Revenue Service [Fiscal 2014]
13. OCLC. Internal Revenue Service [Fiscal 2014]
14. OCLC. Internal Revenue Service [Fiscal 2013]
15. OCLC. Internal Revenue Service [Fiscal 2013]