FishHawk pay attention to the post especially the titles. Rusty went to Lower Buckhorn not Upper Buckhorn. They are 2 totally different lakes. Here is a map of the Lower Buckhorn Lake Ontario.
http://maps.google.ca/maps?hl=en&q=lower%20buckhorn%20ont&um=1&ie=UTF-8&sa=N&tab=wl
Regarding the basic (apparently hand drawn) map you provided, what red dots in a black and white drawing? I'm not colour blind but I don't see any colour there.
It's not relavent useful information for the member's topic.
FishHawk, do you have any treasure maps amongst your files/research?
No I don't.