Geodesy

Lois Leigh, wife of party chief Lt. George Leigh, with a picnic...

Four-foot wooden stand with pee-wee light on top. Note Sears...

Display of various signal lights and other equipment for an open...

Earthquake movement as manifested by offset in center line of...

A mirage on Cook Inlet.

Observer, recorder, umbrella man, and back sight rod over mark in...

Starting the day's leveling operations.

Instrument man leveling instrument during leveling operations.