Thanks for the reply, I have an interest in historical structures in Anchorage. I found it on Google, the site is now the Winterberry School. On street view you can see the old driveway leading to the site (already demolished) but from the historical aerial view on Google Earth I can see it was quite a large place. 
Funny you mentioned the property at 16th & Karluk as I noticed it while looking at historical satellite imagery of the area. Now I'm curious about the cabin. I wish there were more photos of these places taken before they are demolished.