SECRETARY'S REPORT IX 



INTERNATIONAL EXCHANGE SERVICE 



Chief. — D, G. Williams. 



NATIONAL ZOOLOGICAL PARK 



Director. — William M. Mann. 



Assistant Director. — Ernest P, Walkeb. , 



Head Keeper. — Frank O. Lowe. 



ASTROPHYSICAL OBSERVATORY 



Director. — Loyal B. Aldkich. 



Assistant librarian. — Maejorie R. Kunze. 



Division of Astrophysical Research : 



Chief. — William H. Hoover, 



Instrument makers. — Andrew Kramer, D. G. Talbert, J. H. Harrison. 



Research associate. — Charles G. Abbot. 

 Division of Radiation and Organisms : 



Chief. — R. B. Withrow. 



Plant physiologists. — Leonard Price, V. B. Elstad, Auce P. Withuow. 



Chemist. — Emanuel Horowitz. 



NATIONAL AIR MUSEUM 

 Advisory Board: 



Alexander Wetmore, Chairman, 



Maj. Gen. Donald L. Putt, U. 8. Air Force. 



Rear Adm. T. S. Combs, U. S. Navy. 



Grover Loeninq. 



William B. Stout. 

 Assistant to the Secretary for the National Air Museum. — Carl W. Mitman. 

 Curator. — P. E. Garbee. 



Associate curators. — R. C. Strobell, W. M. Male. 

 Museum aide. — Winthrop S. Shaw. 



CANAL ZONE BIOLOGICAL AREA 



Resident Manager. — .James Zetek. 



