- CollectionDX19 - Cotton Family Papers
- SeriesC - Francis Cotton : Family and general correspondence, personal papers : 66 to 133
- Sub-seriesFamily Correspondence
- Item66 - Thomas Cotton to son Francis
- Sub-item1 - Letter : Thomas Cotton to son, Francis Cotton, 1831
- Sub-item2 - Letter : Thomas Cotton to son, Francis Cotton
- Sub-item3 - Letter : Thomas Cotton to son, Francis Cotton, 1834
- Sub-item4 - Letter : Thomas Cotton to son, Francis Cotton, 1834