I came across the phrase "sea of flowers' recently when I read "The Last Spike" - a history if the Canadian Pacific Railway - and recognised it from the Stan Rogers song.

By googling "last spike" and "kelsey" I just learned that Kelsey had an Indian name - "Miss-top-ashish" or "Little Giant", from a book with the intriguing title "The Gay]grey Moose: Essays on the Ecologies and Mythologies of Canadian Poetry 1690-1990" (Yes, it appears to have a ] in the title!)