 His atlas of the Low Countries first published in 1667, was named "Nieuw Kaertboeck van de XVII Nederlandse Provinciën" and contained 14 to 25 maps.De Wit quickly expanded upon his first small folio atlas which contained mostly maps printed from plates that he had acquired, to an atlas with 27 maps engraved by or for him.By 1671 he was publishing a large folio atlas with as many as 100 maps.