However, unlike those scripts, the other vowels are written with full letters.

The full letter is below and can be found here :

We now have the full letter online for you.

The full letter to President Obama is available below:

You can read the full letter at the Observer.

He insisted that even a mayor must follow the full letter of the law.

The full letter by the bipartisan group of Members can be found here.

You can read the full letter the committee members sent to the president here.

How nice to receive a letter so full of constructive criticism.

It was clearly an important point for her and, therefore, I think justifiably quoted in the context of the full letter.