Letterhead.

A Letterhead Icon Set is a collection of small, graphic symbols or images designed to be used on a letterhead, which is typically the top portion of a printed or electronic document that includes a company or individual's logo, name, and contact information. These icons are often used to enhance the visual appeal of the letterhead and can convey important information or represent the nature of the business or individual.

DiloneCreation:

Pinterest: https://id.pinterest.com/dilonecreations