Regulations governing commercial radio service between ship and shore stations, United States Army. 
1914, corrected to August 15, 1917 (changes nos. 8 and 15) 
 - Washington,  Govt. Print. Off.,  1917. 
 - 131 p.  24 cm. 
 - Its Manual  no. 2-A .
 - United States.  Army.  Signal Corps.  Manual  no. 2-A. .
<br/><br/> At head of title: War dept. Office of the Chief Signal Officer.  "War department. Document no. 459. Office of the Chief Signal Officer." 
<br/><br/><label>LCCN: </label>war17000242  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Telegraph, Wireless.
<br/><br/><label>LC Class. No.: </label>HE8670.U6  / A4 1917b