- ???DX19 - Cotton Family Papers
- ??C - Francis Cotton : Family and general correspondence, personal papers : 66 to 133
- General Correspondence : 82 to 125
- ??82 - Letter from F.Aubin
- ??83 - Letter from James Backhouse, York
- ??84 - Letter from James Backhouse Jnr.
- ??85 - Letter from J. Bassett
- ??86 - Letter from William Beck, London
- ??87 - Letter from George Renison Bell
- ??88 - Letter from Ellen Boultbee
- ??89 - Letter from George Bowes
- ??90 - Letter from Reuben Burden
- 35 more...