| Author | Popularity |
| Aitken, W. R. (William Russell), 1913- |
2 |
| Grieve, Michael |
2 |
| MacDiarmid, Hugh, 1892-1978 |
2 |
| Aitken, George A. |
1 |
| Aitken, Peter |
1 |
| Aitken, Robert, 1948- |
1 |
| Aitken, Sir, Robert Stevenson |
1 |
| Countryside Commission for Scotland |
1 |
| Steele, Richard, (Sir), 1672-1729 |
1 |
| Turnbull, R. G. H. |
1 |