Antique Real Photo Postcard. Depicting the Harrison House Hotel on Long Lake in Harrison, Maine. Undivided back, postmarked 1906 from Harrison, Maine. Condition: This is an original photo postcard, not a copy or reproduction. It has a small chip in the lower left corner, otherwise excellent condition. Comments: Harrison is a town in Cumberland County, Maine, United States. The population was 2,447 at the 2020 census. A historic resort area, Harrison straddles Long Lake and Crystal Lake. It is part of the PortlandSouth PortlandBiddeford, Maine metropolitan statistical area. The Harrison Hotel, depicted in this postcard, was established in 1906.