Curtis, Henry S.  1870-1954. <br/><br/>
School grounds and play / 
by Henry S. Curtis. 
 - Washington :  G.P.O.,  1922. 
 - 31 p. ;  23 cm. 
 - Bulletin / Department of the Interior, Bureau of Education ;  1921, no. 45 .
 - Bulletin (United States. Bureau of Education) ;  1921, no. 45 .
<br/><br/>Bibliography: p. 31. 
<br/><br/><label>LCCN: </label>e  22000266  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Playgrounds--United States.<br/>Play--United States.
<br/><br/><label>LC Class. No.: </label>L111  / .A6 1921, no. 45