I believe these are photos taken in the period 28th Jan to 3rd March 1932 when Japanese planes attacked , from the sea,  the International area of Shanghai.  There  are ms  notes on the reverse of two  of the cards , one showing bomb damage which names the SINCERE department store which was built on Western lines ,the other naming Cathay Hotel.  The third photo   shows heavy smoke over the roofs and is  untitled .

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