What hides this stereogram?

Stereogram - 3D Image

#brainteasers #stereogram #3Dimage

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Dressed as El Niño

Dressed as "El Niño" for Halloween

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Gas Mask

In 1849, the forerunner of modern gas masks is patented by Lewis Phectic Haslett of Louisville, Ky. His "inhaler or lung protector" design used woolen fabric (or other porous material) to filter dust and other material from the air (U.S. No. 6,529).

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