The "Wainwright District" site includes "The Camp Wainwright Story" with several additional pages of information about the POW camp:
We Meet Again - by Erika Foley, with details on a visit by former POW Hansgeorg Mertsch. Among other tidbits:
POW Collector Visits Wainwright covers a visit by collector Robert (Bob) Henderson and his brother Brett, with Captain Kevin Winfield of the Wainwright base, and then former guard Leo Hamson and former POW Siegfried Osterwoldt.
The Enemy Within discusses the documentary by Eva Colmers.
Buffalo National Park News Stories features clips from 1909-1921.
And of course: Recollections of a Guard Officer at POW Camp 135 by Leo Hamson, which we featured earlier.