images used: https://www.flickr.com/photos/80223459@N05/11455183745 - https://digitalcollections.nypl.org/items/510d47da-4452-a3d9-e040-e00a18064a99 - https://digitalcollections.nypl.org/items/13ada720-e12e-0136-71b3-000cfd003449 - https://www.flickr.com/photos/chrisinplymouth/34596414104/in/pool-textures_only/
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