The Abandoned Machine Shop of Eldridge R. Johnson, Victor Talking Machine Co., Camden, New Jersey

The Burning of the Capitol Traction Company Power House on Pennsylvania Avenue, Washington, D.C.

One of the First Helicopter Engines in America, by Emile Berliner…In An Old Barn At 1458 Columbia Road, NW, Washington, D.C.

The Gyrocopter Wasn’t All That Appealed To Henry Berliner…Emile Berliner’s Helicopter, Brightwood, Washington, D.C.

Emile Berliner Invented the Flat Disc and Gramophone at 1458 Columbia Road, NW, Washington, D.C.

Emile Berliner Invented the Microphone at 812 6th Street, NW, Washington, D.C.