U.S. owes helium monopoly to science : exhibit in the Hall of Science

A diagram illustrates the proportionate amounts of the various gases present in the air.

Publication date: 1934-10-21

Size: 4.7 x 15.2 cm

Publisher: Tribune Company

Print type: grayscale

Language:

• English

Genre(s):

• Diagrams

Type(s):

• still image
• text

Copyright(s):

• These materials are either in the public domain, according to U.S. copyright law, or permission has been obtained from rights owners. The digital version and supplementary materials are available for all educational uses worldwide.

Is part of:

• The Janet A. Ginsburg Chicago Tribune Image Collection

Source(s):

• Chicago Sunday Tribune (October 21, 1934), p. 2

Format(s):

• application/pdf
• image/jpeg