Labels:text | handwriting | font | paper | book | ink | document OCR: Codex Trivulzianus 8 /4 x 5 1/2 in. (21 x 14 cm) Milan, Castello Sforzesco Dating from Leonardo's early years in Milan (ca. 1487-90), this T notebook of 55 folios is one of the oldest collections of Leonardo's writings. It consists primarily of word lists, grammar, and lexicology, but it also contains notes on painting and architecture, as well as a few sketches pertaining to Leonardo's design of the tiburio ("dome") for the Milan Cathedral. -