- AAA1/7
- Is-gyfres
- [?1916]-1960
Letters to John Cowper Powys from his sister Marian Powys.
Letters to John Cowper Powys from his sister Marian Powys.
Letters to Marian Powys and Peter Powys Grey
Letters from John Cowper Powys to his sister Marian Powys and to his nephew, Peter Powys Grey, Marian's son.