View of two freighters in Soo Locks; visitors stand on walkways observing Locks. Houses in background. Printed on front: "The Locks, Sault Ste. Marie, Mich., 9851 showing the Weitzel Lock on the left. Three times more tonnage passes through these locks each year than through the Suez Canal. Copyright 1905 by Detroit Publishing Co." Handwritten on front: "Just home from the Soo. 'See the Soo' and then rest assured the Panama will be a success. S.H.K." Printed on back: "Phostint card made only by Detroit Publishing Co." Card is postmarked August 10, 1907.
