A few months ago an octogenarian friend gave me a copy of two pages of a letter. One page is shown here (click to enlarge). I understand from my friend that a Mr. Cooke in Kimberley placed ads in the newspapers looking for people interested in Pitt Lake's Lost Creek Mine and apparently sold these pages to interested parties.
Daryl Friesen has another version with practically the same text but with a few more map details on it. Click here to have a look.
I wonder if anyone can tell more about Mr. Cooke and this letter.