Safety appliances (train control) :  hearing before subcommittee, 70th Congress, 2d session, on H.R. 15094, to create board for safety and betterment of the people, Jan. 16, 1929. 

 - [Washington, D.C.],  1929. 
 - iii, 73 p. 
<br/><br/> Document for sale by the Superintendent of Documents, paper, 10c.  CRDP Program Historic Shelflist record. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Railroads--Safety appliances--United States.
<br/><br/><label>Gov. Doc. Class. No.: </label>Y 4.IN 8/4:SA 1/7