Unfortunately, I don’t have time to research, just ask questions. How many (if any) of the people in that image are Subud people?
No idea who they are, the source of that image remains a mystery. Some of them have been identified as students at the U of HI. Who the men are that look like dock-workers is unknown. The composition suggests a farewell, and the age of both the kenyan and Stanley Armour suggests it was at the time of the kenyans 1970 visit.