Staff of Wellcome Chemical Research Laboratories (back row Humphrey Paget, J.A. Gordon; front row W.H. Gray, T.A. Henry, T.M. Sharp). Photograph, 1923.

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Staff of Wellcome Chemical Research Laboratories (back row Humphrey Paget, J.A. Gordon; front row W.H. Gray, T.A. Henry, T.M. Sharp). Photograph, 1923. Wellcome Collection. Public Domain Mark. Source: Wellcome Collection.