Originally Posted by Pete7
You do learn some fascinating stuff on CF
I researched and wrote up my research
on John Seller decades ago. What I wrote above was from memory.
You might want to compare my work
, above at #2, with that of Lawrence Worms.
Worms did his research
and presented it at Emmanuel 11 years ago.
Worms had sources additional to mine and based his view of Seller on what Pepys (Samuel Pepys, pronounced 'Peeps') wrote on a person whom Pepys wrote about but did not name (and whom Worms identified as Seller).
See Worms's weblog entry on Seller and Pepys at: https://laurenceworms.wordpress.com/...don-map-trade/
Worms has it that the Blau plates he obtained in Amsterdam
were worn out plates, discarded by the printer. The story I had from my research was that a third party had copied the Blau plates; Seller then added some text in English (but kept others in the original) and added some chart detail. Once Seller had his toehold on the market in England
, he quickly gained resources to make his own plates and surveys.
In hindsight, I think one of the most interesting lessons to draw is about patterns in cartography. In the sense that in the 16th - 17th centuries, as European economies focused on navigation
, many of those economies went through cycles of:
(1) borrowing/plagiarising the charts of others;
to produce superior charts, giving them a competitive advantage; and sometimes
(3) becoming complacent, making poor copies of their own charts (losing detail, making errors when copying); before
(4) returning to excellence; or
(5) reducing their fleets and dependence on maritime trade
using their own hulls.