Maler tagged Formal Letter
When writing a formal or business letter, presentation style and format is key to making a good first impression. These templates provide excellent examples of how to structure such a letter, and include sample content to act as a guide to layout.
Recent

UCB Letterhead Old School
This is the old school UC Berkeley letterhead with updates (the addition of UC Merced), and the UC Berkeley font embedded.
Leslie Lamport w/ updates

NTU EEE Letterhead
Letterhead for Nanyang Technological University's School of Electrical & Electronic Engineering (15 Jun 2005).
Downloaded from https://ntulearn.ntu.edu.sg/bbcswebdav/users/ekvling/Public/latex/index.html
Keck-Voon Ling

Sichuan University CS Reference Letter Template
An unofficial SCU CS letter of recommendation template with letterhead, modified from THU CS's template by Jiayi Weng.
Xuan Zhang

BJUT Recommendation Letter Template (for sharing)
This is a letter template for the need of BJUT students, which is modified based on OSU and FDU versions.
Yunduo Wang

LaTeX template for NSF-style Biographical Sketch
This is a template created by Ted Pavlic to help researchers prepare the senior personnel 2-page biographical sketch ("biosketch") that is required by the NSF for large multi-university NSF grant proposals.
You can read Ted's original post here.
Dr. Theodore P. Pavlic

A Letter Template for the Rector's Office at the Masaryk University in Brno
A template for muletter, a document class for the typesetting of letters at the Masaryk University (Brno, Czech Republic).
Vít Novotný

HIT Letter of Recommendation Template
哈工大推荐信模板
MincooLee

Virginia Tech letterhead template
This is the official Virginia Tech letterhead template. This template is designed to be easily modified so that it can be used by anyone at VT for composing professional business communications according to the VT branding guidelines. Add your own information and text to the template to send a custom message.
Robert Browder & Carrie Cross. Modified by LianTze Lim.

Brevpapir - UCPH MATH
En beamerskabelon til brug på Københavns Universitet efter KU's designguide på https://designguide.ku.dk/ For forslag til ændringer, problemer eller fejlrettelser bedes du kontakte imf@math.ku.dk
Alex Jørgensen