Black and white lantern slide of six people aboard a small boat, reading the meter of a water gauge in the Yellow River.

Black and white lantern slide of seven people aboard a small boat, reading the meter of a water gauge in the Yellow River.

Black and white lantern slide of the Liberty Cap rock formation in Yellowstone National Park.

1967-68 yearbook staff. Third from the right (bottom): Cathleen Lupton.

YC-130 US cargo, September 1, 1954.

YB-60, US bomber, September 1, 1952.

James Yanok

Yamato class, Japanese BB (battleship), January 15, 1945.

Yamato class, Japanese BB (battleship), January 1, 1945.

Black and white lantern slide of a slab of rocks near a beach. The label on the slide reads "The 'slab walk,' lower section."

YAK-9 Russian fighter, October 1, 1947.

YAK-9 Russian fighter, October 1, 1947.