Canada is finished (finally):
Added the lakes of Ontario, Newfoundland, Quebec and Ungava/Northwest territories. Also had to redraw about a dozen reservoirs in Quebec/Labrador to show the smaller natural lakes that were enlarged to make the modern reservoirs. This was only possible because I found some quite detailed maps from 1922 and 1966 (before the major reservoirs were filled).
I'm also very pleased with how the Quebec/Newfoundland border dispute was sorted out. To show the maximum claim for Newfoundland I went with the watershed boundary (everything that drains into the Atlantic goes to Newfoundland, the rest to Canada). Most of this border is the OTL Newfoundland border (apart from the bit following the 52nd parallel). All maps from this period show Canada controlling most of Labrador, with Newfoundland only getting the coast (eg
http://www.davidrumsey.com/luna/ser...st_no="2113.000";lc:RUMSEY~8~1&mi=100&trs=137) so I went with this as well, showing it as the Canada/Newfoundland border. I'm also quite pleased with how the Quebec/Northwest territories border worked out (follow the East Main river to its source at lake Nitchequon, then a straight line to Ashuanipi lake, North up the Ashuanipi river to the Menithek lakes, down through Lobstick lake, then down the Churchill river (in 1907 it was called the Hamilton river) to Lake Melville and the sea).
On another note, this map should show all the natural lakes of the Americas, and should be useful for all pre 1920's maps (barring a few exceptions like the Salton sea). I'm quite pleased with this.
Next on my to do list is the Amazon basin. I need to finish drawing the various claim lines, then double check the Internal divisions for Colombia and Venezuela.
On a related note, has anyone ever found anything on the Yuruari Territory in Venezuela? I've seen it on quite a few period maps, but I haven't found a shred of evidence online that it ever existed. I've shown it on this map (the territory south of Delta Amacuro, and East of Bolivar, on the border with British Guyana), But I want some clarification.
After that the Americas will be done. I think I'll move on to Europe next.