| RefNo | Title | Source |
| WP/16/1/82 | R. J. Andrews to William Greenell Wallace from Hertford | |
| WP/16/1/85 | T. J. Hamilton Gorringe to William Greenell Wallace from Oakwood, Haslemere Road, Crouch End | |
| WP/1/1/165 | Letter from Alfred Russel Wallace to his son William Wallace, from Parkstone, Dorset | |
| WP/16/1/86 | T. J. Hamilton Gorringe to William Greenell Wallace from Oakwood, Haslemere Road, Crouch End | |