More info has gone online at the Turner Memorial Library in Presque Isle.
Try history.presque.lib.me.us or go to their website to get to some valuable info.
Histories by Laila Graves, Rev. Park, and WT Ashby, Centurama 1959, 1904 PI Postal Census, The Norm 1900, PIHS Flyer 1914-1923, Salamagundi 1909, and of course the in-progress index to local obits (eventually the obits will be digitized).
They also have oral histories.