My suspicions were all confirmed by his peculiar action in typewriting his signature, which, of course, inferred that his handwriting was so familiar to her that she would recognise even the smallest sample of it.
Mis sospechas se vieron confirmadas por ese detalle tan curioso de firmar a máquina, que por supuesto indicaba que la letra era tan familiar para la joven que ésta reconocería cualquier minúscula muestra de la misma.