Busy day, upper approaches of Soo Locks

Photograph showing the steamboat August Ziesing preparing to leave the Poe Lock for Lake Superior. Two steamers are entering the fourth lock (Sabin Lock) for a downbound passage, and two boats have just left the third lock (Davis Lock) upbound, while two more wait in the canal for a downbound passage. To the left of the bascule bridge, the swing bridge can be seen in its open position in the approach canal for the Weitzel and Poe Locks.