Wrong Date

A Memory of Liverpool.

I visited Liverpool for the Liverpool v Portsmouth game and did some sightseeing. I noticed the Georges Dock Ventilation Tower. Not knowing what the tower was I later tried to identify the tower on Google. I came accross your aerial photo and noticed it was behind the Port of Liverpool Building. I typed in the words "behind port of liverpool building" and success! I got the answer. It was the Georges Dock Ventilation Tower built in 1951-52. However, your photo states it was taken in 1936. Can anyone explain this? Thanks.