Letters, personal and business, to Walter Heald:
- 1-28 (1870-1896), from his father Nicholas;
- 29-32 (1870-1887), from his mother Mary Helen;
- 33-40 (1887), from his wife Emily Isabel;
- 41-54 (1884-1911), from and concerning his brother Ernest;
- 55-56 (1885), from his brother Frank;
- 57-61 (1886-1910), from his sisters Kate (Hall) and Rachel;
- 62 (n.d.), from his mother-in-law Mrs S.I. Krabbé;
- 63-186 (1885-1901), from his brother-in-law C.H. Krabbé of Krabbée, Higgins & Co.;
- 187 (1899), from his nephew C.F. Krabbé;
- 188 (1898) from Constance Russell.