Nuclear weapons

A medallion, bronze in color, commemorating the 25th anniversary of Trinity in New Mexico.

All of the materials except for a manual published by Victoreen Instrument Co. for use with its Radiation Survey Meter, Model No. 3 was issued by the U.S. government's Civil Defense Administration. Topics include use of a Geiger counter, construction of home fallout shelters, etc. There is also a set of lesson plans to teaching about radiation and its effects in high schools.

A copy of LIFE Magazine, dated October 10, 1949, featuring J. Robert Oppenheimer on the cover.

Seven photographs and two negatives of the Trinity nuclear detonation, taken at various points in the explosion.