What was James Diamond known for?

The Black Coin, Pilot X, A Million to One, and I'll Name the Murderer

FAQ

When did James Diamond die?
October 17, 1936
How did James Diamond die?
Pneumonia
Where did James Diamond die?
Los Angeles, California, USA
When was James Diamond born?
1894
What was James Diamond known for?
The Black Coin, Pilot X, A Million to One, and I'll Name the Murderer
Was James Diamond married?
Yes, to Sybil ?