I'm told Flynn may have worked with Travis at Westchester. And a few months ago while searching the Fulton History site I found a snippet that suggested Flynn also worked with Travis at Washington Golf and Country Club. Here is the November 5, 1919 NY Evening Post article:
I made Ed Homsey of the Travis Society aware of this finding and he recently sent me the following article (I think he also likes the Fulton site) that suggests Flynn built Onondaga for Travis. This from the April 20, 1919 edition of the Syracuse Post Standard:
I'm hoping these two findings might catalyze others that are enjoying the Fulton site to keep their eyes open for more Flynn/Travis articles.