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Continue to ChatHighland Post Office (historical) Map - Clackamas County, OR https://www.yellowmaps.com/usgs/topo.cfm?map=or-1165393-highland-post-office-%28historical%29
Highland Post Office (historical) Map - Clackamas County, OR https://www.yellowmaps.com/usgs/topo.cfm?map=or-1165393-highland-post-office-%28historical%29