Derek Jeter farewell video from Jordan Brand - RE2PECT : r/baseball
New York Yankees Archives - Sportscasting
Paul O'Neill's No. 21 Jersey to Be Retired by Yankees on August 21
Paul O'Neill talks jersey number retired by New York Yankees
Paul O'Neill on No. 21 retirement Yankees
Yankees' retirement of Paul O'Neill's number might be a stretch
Sladegorton by Mike Meuse Smith - Issuu
The New York Times 2017-05-15, PDF, Mountaineering
Paul O'Neill's No. 21 to be retired by Yankees
Paul O'Neill Yankees No. 21 retired
NY Yankees retire Paul O'Neill's No. 21