| RefNo | MC/22/219 |
| AltRefNo | MC.07219 |
| Level | Item |
| Title | Letter from [Percy Alexander] MacMahon, Old Palace Yard, Westminster, to the Secretaries of the Royal Society, Burlington House |
| Creator | MacMahon; Percy Alexander (1854 - 1929); mathematician |
| Date | 22 January 1907 |
| Description | Refers to the Graham Standard Scale. Enclosed is a reply from Robert William Frederick Harrison, Assistant Secretary of the Royal Society, dated 23 January 1907. |
| Extent | 3p |
| Format | Manuscript |
| Typescript |
| PhysicalDescription | Ink on paper |
| AccessStatus | Open |