It does not seem possible at this date to enumerate all the maps which might properly be called the special work of Blaeu, and it is doubtful if it could have been done in Blaeu’s day, since he so often borrowed here a little and there a little which he incorporated in his maps. Reference has before been made to the practice of map makers borrowing one from the other, sometimes more, sometimes less, without credit. Not all of Blaeu’s maps are signed, and but comparatively few of them are dated. He did not consider it essential always to employ the same name when affixing his signature. Sometimes he gave his name as Guilielmus Janssonius Blaeu, Guil. Jansz. Blaeu, Guiljelmus Blaeuw; sometimes as Guil. Jansz. Alcmar, Guilielmus Janssonius Alcmarianus; sometimes as Guiljelmus Caesius, or G. J. Caesius, in which, in accord with a practice of the time, he had classicized his name Blaeu; sometimes the name is coupled with that of the son as Guil. et Johan. Blaeu, and on certain maps we find the names J. or Joan. Blaeu, Johannes et Cornelius Blaeu, maps which were wholly or in part the work of the sons, but were drawn after the manner of the father. Next to his terrestrial globe maps of 1599 and 1602, his oldest known map is that of 1605, here issued in facsimile, and described below. His “Nywe Paskaerte” of 1606, of which but few copies are now known, appears to have been the first which he especially designed for navigators. Baudet gives a somewhat enthusiastic description of a copy of this map printed on parchment, which at the time of his writing was in the possession of Mr. Tiele.[23] It is drawn with the west at the top, having a width of 76 cm. and a breadth of 59 cm., extending from 25° 30′ to 75° north latitude, or from the Canary Islands on the south to the Beeren Island on the north, from Terceira on the west to and including the Ionian Islands on the east. In a cartouche at the bottom of the map is the following inscription, given here in free translation:[24] “Willem Jansz. to the kind reader: In this map, dear reader, you will find all the sea coasts of Europe carefully drawn by Cornelius Doedsz. of Edam, according to true directions and elevations, except for the Mediterranean, in which the author has purposely omitted the elevations from Malta eastward, and has only given direction, according to our common Dutch compasses, which, in the vicinity of Candia and Cyprus point a little too much toward the northwest, as is shown by the fact that Malta, the south shore of Candia and of Cyprus are all situated in latitude 36°, although it is impossible to reach them sailing west-east, as this map clearly shows.” To the right of the above inscription we read: “Ghedruct t’ Amsterdam bij Willem Janssoon op’t Waeter inde Sonnewijser,” and to the left, given here in translation: “Since on account of the limited space the entire Mediterranean Sea could not be given, we have therefore