"To sign the letter" means to write your name or put your signature at the end of a letter as a way of showing that you agree with the content or take responsibility for it. Full definition
The client quotes below are taken from surveys conducted by international legal directories evaluating the performance of our firm, as well as from signed letters of recommendation issued by our clients. (maravela.ro)
Many of the scientists who signed the letter are well - regarded physicists and have advised federal policy - makers on nuclear weapons issues at various points in their careers. (aaas.org)
Instead, the department accepts signed letters from school principals, who promise all their staff members have passed required background investigations. (orlandosentinel.com)