There’s not a whole lot of written material about the Okanogan Country, where my first three Tales of the Unearthly Northwest are set, but here is what I found:
Kirk, Ruth, and Carmela Alexander. Exploring Washington’s Past: A Road Guide to History. 1990, University of Washington Press, Seattle. More a reference book to the many and varied places in Washington state than anything else. Sort of an update to the WPA book, below, in some ways. Spends almost a page on Conconully without mentioning the flood, though.
McNair-Huff, Rob. Washington Disasters. 2006, Globe Pequot, Guilford, CT. Out of print, but available through interlibrary loan. A fun little book, for certain values of fun. Contains a chapter on the Conconully flood.
Wilson, Bruce A. Late Frontier: A History of Okanogan County, Washington. 1990, Okanogan County Historical Society, Okanogan, Washington. Lots of photos, lots of reproductions of newspaper
articles, lots of interesting anecdotes. Available through the Society, below.
Workers of the Writers’ Program of the Works Projects Administration in the State of Washington. The New Washington: A Guide to the Evergreen State. First edition, 1941. Mine’s the revised edition, 1950, with added material by Howard McKinley Corning. Binfords & Mort, Publishers, Portland, Oregon. I adore the WPA books on the U.S. states. They’re full of forgotten gems and nuggets of information.
http://www.okanogancountry.com/ — The Okanogan County
tourism website. The arts and heritage section was particularly useful.
http://okanoganhistory.org/ — The Okanogan County Historical Society runs a terrific museum in the town of Okanogan (where you can buy the Late Frontier book listed above), and has posted dozens of informative and inspirational (at least in my case) historical signs along the side of the road all over the county.
http://www.molsonmuseums.org/ — A terrific museum and ghost town out in the middle of nowhere. This is where Harry the pig’s prototype is to be found.
http://www.historylink.org/index.cfm?DisplayPage=output.cfm&file_id=7609 — The Washington State History Museum’s HistoryLink page on the Conconully flood.
http://www.ghosttownsusa.com/bttales4.htm — And Ghost Towns USA’s page on the flood.