No.	Title	Date
1	Letter from Robert Hart to J. D. Campbell, 1881 November 13 ( 2 items )
2	Letter from Robert Hart to J. D. Campbell, 1879 August 24
3	Letter from Robert Hart to J. D. Campbell, 1879 August 26
4	Letter from Robert Hart to J. D. Campbell, 1879 December 21
5	Letter from Robert Hart to J. D. Campbell, 1879 July 16
6	Letter from Robert Hart to J. D. Campbell, 1879 July 27
7	Letter from Robert Hart to J. D. Campbell, 1879 June 6
8	Letter from Robert Hart to J. D. Campbell, 1879 November 18
9	Letter from Robert Hart to J. D. Campbell, 1879 November 9
10	Letter from Robert Hart to J. D. Campbell, 1879 October 11
11	Letter from Robert Hart to J. D. Campbell, 1879 September 17
12	Letter from Robert Hart to J. D. Campbell, 1880 August 10
13	Letter from Robert Hart to J. D. Campbell, 1880 August 11
14	Letter from Robert Hart to J. D. Campbell, 1880 August 17 [Letter 25]
15	Letter from Robert Hart to J. D. Campbell, 1880 August 17 [Letter 26]
16	Letter from Robert Hart to J. D. Campbell, 1880 August 25
17	Letter from Robert Hart to J. D. Campbell, 1880 August 27
18	Letter from Robert Hart to J. D. Campbell, 1880 August 7
19	Letter from Robert Hart to J. D. Campbell, 1880 August 8
20	Letter from Robert Hart to J. D. Campbell, 1880 December 9