memorialize

viettää muistojuhlaa

ikuistaa puhekieltä To provide a memorial for someone; to commemorate
puhekieltä To petition with a memorial, or statement of facts.
Charles Dickens, Little Dorrit

Why, you'll—you'll ask till they tell you. Then you'll memorialize that Department (according to regular forms which you'll find out) for leave to memorialize this Department.