Time: 2:50.
Referee: Octavio Meyran.
Scoring at time of stoppage: 106-104, 107-105 Hong, 107-106 Zamora.
Thanks to Il Duce.
Alfonso Zamora v. Hong II.
Re: Alfonso Zamora v. Hong II.
With respect to the identity of the referee and the time of the stoppage, an additional source can be found in Barry Hugman's History of World Championship Boxing.