I found Holand's article at the Minnesota Historical Society regarding Nicholas of Lynne. The article is entitled "An English Scientist in America 130 Years Before Columbus" and was published in Wisconsin academ;y of Sciences, arts, and Letters vol. 48, 1959.
What I want to do here is primaraly to put down the quotations used from the historical documents that Holand consulted. A few names first, just to set the time:
Mercator (1512 - 1594) cartographer, famous for the Mercator projection.
John Dee (1527-1608) English scientist, astrologer, and geographer.
Frobisher (1535-1594) - First explorer to attempt to find the Northwest Passge - explored NE coast of North America in three seperate voyages. Hudson's Bay was not discovered or explored until 1610 by Henry Hudson.
Richard Hakluyt - (1552? - 1616) geographer, wrote several books on early voyages.
To open, a little about Nicholas from the Dictionary of National Biography.

Hakluyt states that Nicholas of Lynne made a voyage to the lands near the North Pole in or about 1360. His authorities, Gerardus Mercator and John Dee, who make no reference to Nicholas by name, derive their information from James Cnoyen of Boise-le-Duc, a Dutch explorer of uncertain date. Cnoyen's roport, written in 'Belgica Lingua' is lost. Mercator made extracts from it for his own use and sent them in 1577 to John Dee. These extracts are preserved in the British Museum. From them its appears that Cnoyen's knowledge was obtained from the narrative of 'a priest with an astrolabe." This report was presented to the King of Norway in 1364. According to the priest's account, an Oxford Franciscan, who was a good astronomer, made a voyage in 1360 through all the northern regions, and described all the wonders of these islands in a book he gave to the King of England, and inscribed in Latin Inventio Fortuna.

The priest who had the astrolabe related to the king of Norway that in AD 1360 there had come to these Northern Islands an English Minorite form Oxford who was a good astronomer etc. Leaving the rest of the party who had come to the Islands, he journeyed further thorough the whole of the North etc, and put into writing all the wonders of those Islands, and gave the King of England this book, which he called in Latin Inventio Fortunatae, whch book began at... latitude 54, continuing to the Pole. -Cnoyen

As Mercator metnioneth out of a probable author, thre was a frier of Oxford who himselfe went verye farre north abouve 200 years ago... He roporteth that the southwest parte of that lande is a fruitful and holesome soil. The northeast pare is inhabited with a people called pygmei, whiche are not at the uttermose above four foote high...-Beste.

there is never in these parts so much wind as might be sufficient to drive a cornmill - Cnoyen

it is divided into four partes or Ilandes by foure greate guttes, indrafts, or channels, running violently and delivering themselves into a monstrous receptacle and swallowing sincke, with such a violent force and currant, tha a Shippe beying entred never so little within one of those foure indrafts, cannot be holden backe by teh force of any great winde, but runneth in headlong by that deep swallowing into the bowels of the earth - Beste

the compasses become useless, and ships that carry iron can not get away -Ryusch in the margin of his map of 1508 based on Cnoyen's writings.

A high mountain of magnetic rock, 33 leagues in circumference, the land adjoing being torn by the sea into four great islands - Ryusch

This is so particular a description of the land and countries lying about the Pole, argueth that this Oxford frier tooke great pains therein, and induceth great probabilities and likelihood of the truth thereof, because he observed so diligently by measure, the bredth of the indrafts, what time, and how long they continued frozen, and with how many mouths or receipts every one of them received the ocean. -Beste

Anno Domini 1364 came 8 of these persons to Norway to the King. Among them were two clerics. One of them had an astrolabe who in the fifth generation was descended from Brusselites. These 8 were of the orginal party who had penetrated into the northern regions. - Cnoyen.

And it is so high (the priest said) that his people, who had received the astrolabe from the Minorite, had told him, and that he had heard it from the Minorite say, the the mountain was visable from the shores of the sea.

This is just a proof that Nicholas did not travel alone, but with a group of Norsemen. One other quote before I go, this form Archbishop Claus Magnus:

In the year 1505 I personally saw two skinboats above the western entrance within the cathedral dedicated to the sainted Halward... It is stated that King Haakon captured them when he with his battle fleet passed the coast of Greenland.