ADDENDUM 2/17/22 11:50 AM: The Tommy Leach is not a supplement. It is printed on pink paper and is part of the issue.
A July 13, 1907, National Police Gazette with Tommy Leach baseball supplement. The issue is complete and is in EX condition. The pages are loose from the centerfold and there is some light shallow spine creasing. The Leach supplement is in EX-MT condition with a clean, bright image.