Conversation so far:
What happened to Sydney Barnes in 1915?
From 1915 to 1923, Sydney Barnes played exclusively and with great success for Saltaire.
Where was Saltaire located?
The club and their ground at Roberts Park had been founded in 1871 and they joined the Bradford League in 1905.

Question: Who did he work with?
Self-contained rewrite: Who did Sydney Barnes work with?