GSL/L/R/11/91a | Letter from the ROYAL INSTITUTION | [1849] | |
GSL/L/R/12/11 | Letter from John BARLOW, Royal Institution | 3 Nov 1851 | |
GSL/L/R/12/62 | Letter from John BARLOW, Royal Institution | 9 Feb 1852 | |
GSL/L/R/12/112 | Letter from John BARLOW, Royal Institution | 8 May 1852 | |
GSL/L/R/12/150 | Letter from John BARLOW, Royal Institution | 3 Sep 1852 | |
GSL/L/R/12/168 | Letter from John BARLOW, Royal Institution | 11 Nov 1852 | |
GSL/POR/43/9-2 | Portrait of Rev John BARLOW | [1865-1877] | 
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