A historical letter is a written document that provides insight into the thoughts, events, and daily life of a specific time period. These letters can be personal correspondences between individuals, such as family members or friends, or official communications, like those between government officials. They often reflect the social, political, and cultural contexts of their time. Many historical letters are preserved in archives and libraries, offering valuable information for researchers and historians. Notable examples include letters from George Washington during the American Revolution or correspondence between Vincent van Gogh and his brother Theo. These documents help us understand the past and the people who lived in it.