- G. G. Davison Receipt Book, 1853/18761
- G.P. Gardner, Three Ambrotypes, 1847/18651
- Gabriel Galt Williamson collection, 1825/19391
- Gaius Dickinson Letters, 1791/19301
- Galen W. Ewing Papers, 1840/1938, bulk 1840/19382
- Galt Papers (I), 1745/189260
- Galt Papers (II), 1840/186212
- Galt Papers (III), 1750/199188
- Galt Papers (III-A), 1848/19175
- Galt Papers (IV), 1819/18753
- Gamble Papers, Letters and Photographs, 1774/18861
- Garber and Logan family papers, 1846/19491
- Gard Family Correspondence, 1828/1874, bulk 1841/18491
- Garland family papers, 1830/19111
- Garrett Family Papers, 1786/19289