He had finished writing a long letter to his wife.

She wrote a long letter to her brother about these problems.

I'll write you a long letter in a week or so.

He wrote a long letter, much longer than he'd expected to write.

Now he got off a long letter to his daughter.

It was a long letter, but the old lady read no more.

And then a long letter near the end of her life.

She also included a long letter in the box, giving information on the house's history.

It was a long letter from a very happy girl, telling me about her love.

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