What are labor statistics for? 
A series of pictorial charts prepared by the Bureau of Labor Statistics for the United States Department of Labor Exhibit at the Century of Progress Exposition, Chicago, 1933 ... 
 - Washington, D.C.,  U.S. Govt. Print. Off.,  1933. 
 - 1 p. l., 12 l.  illus.  23 cm. 
 - United States. Bureau of Labor Statistics. Bulletin,  no. 599 .
 - Bulletin of the United States Bureau of Labor Statistics ;  599. .
<br/><br/> At head of title: United States Deptartment of Labor. Frances Perkins, secretary. Bureau of Labor Statistics. Isador Lubin, commissioner. 
<br/><br/><label>LCCN: </label>l  33000124  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Working class--Statistics.<br/>Labor and laboring classes--United States.
<br/><br/><label>LC Class. No.: </label>HD8051  / .A62 no. 599