These women unlocked the mysteries of the deep sea

The basement of National Geographic holds letters, story drafts, and trip plans from the staff of the bathysphere expedition. Click through to see some of their correspondence with editors at National Geographic.

The basement of National Geographic holds letters, story drafts, and trip plans from the staff of the bathysphere expedition. Click through to see some of their correspondence with editors at National Geographic.

The basement of National Geographic holds letters, story drafts, and trip plans from the staff of the bathysphere expedition. Click through to see some of their correspondence with editors at National Geographic.

The basement of National Geographic holds letters, story drafts, and trip plans from the staff of the bathysphere expedition. Click through to see some of their correspondence with editors at National Geographic.

The basement of National Geographic holds letters, story drafts, and trip plans from the staff of the bathysphere expedition. Click through to see some of their correspondence with editors at National Geographic.

The basement of National Geographic holds letters, story drafts, and trip plans from the staff of the bathysphere expedition. Click through to see some of their correspondence with editors at National Geographic.

The basement of National Geographic holds letters, story drafts, and trip plans from the staff of the bathysphere expedition. Click through to see some of their correspondence with editors at National Geographic.

The basement of National Geographic holds letters, story drafts, and trip plans from the staff of the bathysphere expedition. Click through to see some of their correspondence with editors at National Geographic.