For use in training conscripted men for service as radio and buzzer operators (international code) in the United States Army
By: Issued by the Federal Board for Vocational Education, Washington. October, 1917.
Series: Circular of information,; no. 1
Publisher: Govt. Print. Off.
Published: 1917
Place of publication: Washington
Language: eng
Number of pages: 14
Subjects: Telegraph, Wireless.
Notes: "No more Circulars of information issued. Merged into the Bulletin. Circular of information no. 1 is Bulletin 2."