Monthly Archives: April, 2025

Developing Revolving Doors

Thanks to Philadelphia native Theophilus Van Kannel, we can...

Who Invented the Pencil with an Eraser?

The wood-cased graphite pencil was created in 1565. However,...

Oliver Evans: Discoveries and Innovations

In the late 18th century, Delaware native Oliver Evans...

Who Created the First Electronic Computer (ENIAC)?

The development of the world's first automatic electronic digital...

The Steerable Sled: An Invention from Philadelphia

In the 19th century, Philadelphians loved to go sledding....

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Buddakan

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Butcher and Singer

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Bud & Marilyn’s

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Harp & Crown

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The Capital Grille

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