Complex sentence: A year later, in 1538, he produced his first map of the world; in 1539/40 a map of Flanders, in 1541 a terrestial globe and in between these he found time to write Literarum latinarum, a small manual on the italic script.
Split into simpler sentences: A year later, in 1538, he produced his first map of the world; in 1539/40 a map of Flanders, in 1541 a terrestial globe. In between these works he found time to write Literarum latinarum, a small manual on the italic script.