Digital scan of a 35mm slide. Image of a cardiac pacemaker on a blue background.

Digital scan of a 35mm slide. Pulse generator, black with silver circuitry, shown on a blue background. A white note card with black text reads: Proto I Pulse Generator, [...]

Digital scan of a 35mm slide. Blurred image of the hands of a person manipulating a cardiac pacemaker device.

Digital scan of a 35mm slide. Image of three cardiac pacemaker devices set on a blue background. The device on the left is covered in a mesh material. The etched model nu [...]

Digital scan of a 35mm slide. Image of a gowned and gloved attendant holding a cardiac pacemaker device, possibly a Starr cardiac pacemaker.

Digital scan of a 35mm slide. Four black-and-white images of designs for the Starr cardiac pacemaker.

Digital scan of a 35mm slide. Black-and-white image of the telephone system used to provide remote testing of the Starr cardiac pacemaker after implantation.

Digital scan of a 35mm slide. Black-and-white image of the telephone system used to provide remote testing of the Starr cardiac pacemaker after implantation.

Digital scan of a 35mm slide. The image shows a man demonstrating a procedure whereby patients with implanted cardiac pacemakers can have the device checked by trained pe [...]

Digital scan of a 35mm slide. Image of a cardiac pacemaker device. The gray metal disc has been set on a patterned grey background. The etched label on the device reads: [...]