Robert Chin (Wally's dad) and his connection to the Panama Railway.
Did you know that Uncle Robert is a descendant of one of the remaining survivors of the Chinese sent to Jamaica after many died from horrifying causes during the construction of the Panama Railway. These remaining survivors were sent to Jamaica as they were so sick they would not have been able to survive a trip back to China.
The Chinese were replaced by Jamaicans, many of whom still live in Central America.
References - http://www.panamarailroad.org/chinesetragedy.html