ADDENDUM 2/17/22 11:57 AM: The John Sullivan is not a supplement. It is printed on pink paper and is part of the issue.
A March 2, 1907, National Police Gazette with John L Sullivan boxing supplement. The issue is complete and is in VG-EX condition with a 10" spine split and minor spine frying. The supplement is EX with a shallow non color breaking bottom right corner fold. The image is bright and clean.