By turn, the letters speak in a quiet, private voice but invite public scrutiny.
"It is a letter to my sister, inviting her to visit," she said.
It took the form of an open letter, inviting people to think of, and wish for, peace.
The letter invites the Children's Society to sponsor the conference.
I sent him a letter inviting him to the reading of the will.
The Modern's letters nonetheless obliquely invited further action, most likely in the courts.
Members were notified by a letter inviting them to participate free-of-charge.
The letters invited the men to appear before the grand jury if they wished to offer exculpatory evidence.
It is a letter to my late husband's brother Stannis, inviting him to take the crown.
The letter invited people to a breakfast during the reunion at which people without work could meet classmates who might help.