No.	Title	Date
1	Letter from Robert Hart to J. D. Campbell, 1879 June 6
2	Letter from Robert Hart to J. D. Campbell, 1879 November 9
3	Letter from Robert Hart to J. D. Campbell, 1879 October 11
4	Letter from Robert Hart to J. D. Campbell, 1879 September 17
5	Letter from Robert Hart to J. D. Campbell, 1879 August 24
6	Letter from Robert Hart to J. D. Campbell, 1879 August 26
7	Letter from Robert Hart to J. D. Campbell, 1879 July 27
8	Letter from Robert Hart to J. D. Campbell, 1879 July 16
9	Letter from Robert Hart to J. D. Campbell, 1879 November 18
10	Letter from Robert Hart to J. D. Campbell, 1879 December 21
11	Letter from Robert Hart to J. D. Campbell, 1897 October 5
12	Letter from Robert Hart to J. D. Campbell, 1880 February 5
13	Letter from Robert Hart to J. D. Campbell, 1880 March 26
14	Letter from Robert Hart to J. D. Campbell, 1880 March 20
15	Letter from Robert Hart to J. D. Campbell, 1880 June 22
16	Letter from Robert Hart to J. D. Campbell, 1880 May 21
17	Letter from Robert Hart to J. D. Campbell, 1880 February 1
18	Letter from Robert Hart to J. D. Campbell, 1880 May 5
19	Letter from Robert Hart to J. D. Campbell, 1880 August 17 [Letter 25]
20	Letter from Robert Hart to J. D. Campbell, 1880 August 17 [Letter 26]