Dent, Ellsworth Charles,  1899- <br/><br/>
Good references on lantern slides, film strips, etc., for educational use ... 
Compiled by Ellsworth C. Dent, chief, Visual Instruction Division, National Park Service and Martha R. McCabe, assistant librarian. United States Department of the Interior, Harold L. Ickes, secretary. Office of Education, J.W. Studebaker, commissioner. 
 - Washington,  U.S. Govt. Print. Off.,  1935. 
 - 1 p. l., 10 p.  21 x 8 cm. 
 - U.S. Office of Education. Bibliography ;  no. 33 .
 - Bibliography (United States. Office of Education) ;  no. 33. .
<br/><br/><label>LCCN: </label>e  35000647  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Visual education--Bibliography.<br/>Motion pictures in education--Bibliography.<br/>Radio--Bibliography.
<br/><br/><label>LC Class. No.: </label>Z5811  / .U42 no. 35