That's a beaut.
This issue of large format cards [about a foot square] of at least 50 fights was issued in 1928 by boxing promoter Al Young for the National Hall, a San Francisco venue.
Speaking of Willie Ritchie, here is a remarkable signed photo:
Ritchie was a long-time member of the CA state athletic commission. The dedication is to Bill Schroeder, the founder and director of a sports museum here in L.A.
https://sabr.org/sabr-salute/bill-schroeder/