This is published in the New Orleans Item - Page 8 - 29 September 1901
The Mackay (1896) bout is listed 3 days before it took place & Purtell (1896) bout is listed as October instead of November. The first Mahan bout was on 31st December 1896 as per Kansas City Star - Page 3 - 2nd January 1897.
Lemoyne is DeMange/DeMonge listed one day before it occurred on record above.
Don't know if you can use this but there are some dates for fights that are listed as unknown on his record but difficult to find sources for them. There are some bouts that are missing that have been found but sure that's a common thing for record printed in newspapers at the time.
Not sure if it helps or not but thought is was worth posting none the less