Hi, thanks for the suggestions. I'm familiar with the information you provided.
I did find 2 records supporting that Gus Holmberg worked as a teacher in Tekoa from Aug 1915 until Summer 1917.
I continue to be interested in any other local records which may give further information, specific to the time he was in Tekoa. So far what I have found are his Mason lodge membership record & teachers records at Washington State Archives.