| I.2.5 | Austria writes to France |
| II.1.78 | Charlemagne writes Helen a love letter |
| II.2.58 | Countess writes to Helen |
| II.3.61 | Lafew: "and writ as little beard" |
| II.3.270 | Bertram has letters from his mother |
| II.3.282 | Bertram writes to the King |
| II.4.1 | Helen has the Countess' letter |
| II.5.23 | Bertram has written his letters |
| II.5.68 | Bertram gives Helen the letter to carry to his mother (in which he says he's deserting Helen) |
| III.2.16 | Countess opens Bertram's letter |
| II.2.55 | Helen shows her letter |
| II.2.59 | In such a "then" I write a "never" |
| III.4.1 | Countess gets a letter from Helen (a sonnet!) in which she urges the Countess to write to Bertram to bring him home |
| III.4.29 | Countess tells Rynaldo to write to Bertram |
| III.5.64 | "I write" says the Widow for "I swear" |
| III.6.70 | Parolles will "pen down his dilemmas." |
| III.6.111 | Bertram has sent Diana tokens and letters |
| IV.3.1 | Bertram receives a letter from his mother |
| IV.3.52 | We learn of letters from Helen and (they suppose) the priest |
| IV.3.74 | The Duke has given Bertram letters for the King |
| IV.3.83 | Bertram has writ to his mother |
| IV.3.120 | The Interpreter questions Parolles out of a note and writes his answers |
| IV.3.188 | Parolles purports to have a letter from the Duke |
| IV.3.197 | They read Parolles letter to Diana ("Dian, the count's a fool and full of gold") |
| IV.5.80 | The Countess has letters about her son |
| V.1.19 | Helen gives a letter to the Astringer |
| V.2.15 | Parolles gives Lavatch a letter for Lafew |
| V.3.30 | The king has received (the Duke's) letters praising Bertram |
| V.3.95 | The ring, Bertam says, was wrapped in a letter |
| V.3.137 | The astringer delivers Diana's letter (written by whom? Helen!) |
| V.3.308 | Helen produces Bertram's letter ("When you can get the ring, etc.) |
| --which is a total of 31 letters or references to letters. | |