Comprising:
- (a) numbers 1-43 (1871-1884), letters to F.S. Ellis (mainly) and his partner David White (d.1910), Ruskin's publishers, from Ruskin (numbers 34-43 are undated);
- (b) numbers 44-46 (1868), a revised draft of Ruskin's circular letter announcing his need to work uninterrupted and in seclusion, with 2 printed copies;
- (c) numbers 47-60, letters to Ellis and White from George Allen, 1871 (numbers 47-48), G. Collingwood, 1882 (number 49), Laurence Hilliard, 1878 (number 50), James Rothschild, 1878 (number 51), Arthur Severn, 1878 (number 52-54), Joan Severn, 1877-[81] (number 55-59), Valpy and Ledsam, 1869 (number 60);
- (d) number 61-73 (c 1870-1879), letters to Ellis and White from Ruskin (numbers 67 -73 are undated).