Mounted black and white photograph of a plaque in Portland, Oregon, honouring Jefferson for his 'contribution to the progress of medical science and to the welfare of mankind through his Sommer Memorial Lectures'. The plaque was awarded by the Sommer Memorial Foundation in 1950.
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- ReferenceGB 133 JEF/1/8/4/4
- Dates of Creationn.d. 
- Physical Description19 x 16 cm (photograph), 26 x 20 cm (mount). 1 mounted b/w photograph