Types of letters



1 - RES PRIVATÆ (between private persons)

2 - EX OFFICIO

(written by some person acting in an official capacity, like safe-conducts, notifications, injunctions, etc.)

Arquivo Nacional Torre do Tombo - Correspondência de soberanos.


3 - EX LABORE

(written by a professional, concerning matters of his art, science or expertise)



4 - EX NEGOTIO

(business correspondence)

5 - EX OPERE OPERATO

(epistolary acts: testaments, letters of credence, war declarations, etc.)