Henry Blackwell: Index to bibliography
- NLW MS 4565D
- Ffeil
- 19 cent.
An index compiled by Henry Blackwell (1851-1928), New York to his National Cambrian Bibliography, published 1942.
Blackwell, Henry, 1851-1928 National Cambrian Bibliography, 1942, index to (19 cent.), NLW MS 4565D