ioure 1 1 . — Old public health exhibition installed in the gallery about 1924. 

 (Smithsonian photo 19952.) 



Figure 1 2. I m Hall 01 Heaj hi. 1 ('established and opened in November 1957. 

 (Smithsonian photo 44931.) 



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BULLETIN 240: CONTRIBUTIONS FROM THE MUSEUM OF HISTORY AND TECHNOLOGY 



