Letters are the marks that remain in time, that endure leaving a longing and a melancholy that does not disappear, it just fades away. What remains is the feelings left in each letter written on a paper yellowed by time, which smells of a distant past. To go back, as if the memory of those letters of a colourless ink, were united in words and created memories in black and white, which remind us of the emotion of a time that has not passed.