Gas stations - filling stations

Valentine & Sons, no. 601,171, posted April 3, 1913 to Mrs. J. M. Shafer, Three Rivers, Mich., U.S.A.: "Dear Mother, Will reach Winnipeg about five + will be glad. It hard on the train so long. Passed lake Superior this morn. It is all frozen up at Port Arthur + Fort William both. Just went through a great long tunnel, all dark. Will write soon. Isobel + Ross." Note the "Islands for Sale" sign on the side of the building.