The story was told in the form of a letter from a wife and mother to her husband.

The story takes the form of a long letter written by one old university friend to another.

It was written in the form of an open letter.

The Essay is written in the form of a letter to a female friend.

What the styles had in common was a number of letter forms.

Nora appears on the last page of the book in a letter form.

I'm also aware I wrote this email in the form of a letter.

So Mara wrote her journal in letter form, and put a name at the top.

The next day brought a blessing in the form of a long letter from Juliet.

It takes the form of a letter written by Mirza to his late mother.