Industry's history--four occurrences
By: by Charles Penrose.  A Newcomen publication, 1939.
Contributors: Newcomen Society in North America.
Publisher: Printed at the Princeton university press
Published: 1939
Place of publication: [Princeton
Language: eng
Number of pages: 32
Subjects: Industries -- History.
Notes: At head of title:  The Newcomen society.  American branch.
"This historical address was delivered in the ballroom of the Hotel Kenmore at Boston, Massachusetts, on January 12, 1939."
The four occurrences are:  the origin of air conditioning; the birth of radio broadcasting; the beginning of the Baltimore and Ohio railroad;  first construction of lighthouses with stone.