According to the Clackamas County Historical Society’s excellent Flickr page, the hospital
Opened in April 1911 in an unfinished building on the hill, the original hospital used tents in the yard to shelter patients. The building was replaced with a “modern” structure in 1918.
Lost Oregon 
3 replies on “Photo(s) of the week: Oregon City hospital”
Thank you for the repost! CCHS
Thank you for the picture
I was born there
Chris Granville
Where is the location of that first Oregon city hospital?