When did William W. Snow die?

Please provide more context or information about William W. Snow. There are many people with that name, and without further information, it's impossible to determine which one you are referring to and when they died.

Could you please provide:

* Full name: William W. Snow is not a unique name. Please provide his full name.

* Occupation or profession: What did he do for a living?

* Location or time period: Was he from a specific place or time period?

With more information, I can help you find when William W. Snow died.