Excerpt Number One - It appears on Page 429 Nor had his earlier experience with Donald Mann taught him a lesson; he approached that contractor who hastily organized Mackenzie, Mann and Isbester to build the line. Excerpt Number Two - It appears on Page 429 On April 27th Sutherland was astounded to learn that the contract with Mackenzie, Mann and Isbester, which legally was a continuation of the 1891 contract with Ross, Holt and Mann, would not be recognized by the federal administration.