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Good start-- but three issues: 1. very thin on scholarly articles; use Google Scholar 2. too much coverage of European "discovery" literature that is remote from frontier topics 3. many online links should be included (they are in Google Scholar) Rjensen (talk) 12:10, 2 December 2023 (UTC)[reply]

It was indeed 1914 but the author repeatedly emphasizes the frontier era had long been over before the war began. Some quotes of his scholarly book: Andrews, Thomas G. Killing for Coal: America’s Deadliest Labor War. (Harvard University Press, 2008).

"Coloradans welcomed the eclipse of frontier chaos and the advent of modern standardization. “ ( p 55) "The architectural artifacts of a coal-powered 'age of steam, electricity, and the various inventions for annihilating time and distance' bore little resemblance to the timber-framed houses of the American frontier " [ p 73] The workers "had hacked productive mines out of lifeless earth, contributed to the transformation of the Mountain West from an arid, isolated frontier periphery into an industrial core, and made homes for themselves in the gritty coal camps" (p 248) And most succinctly:: "what forces had changed a former Rocky Mountain frontier into an epicenter of class war" (p 6) Rjensen (talk) 08:05, 9 December 2023 (UTC)[reply]

Frederick Jackson Turner, the author of the "Frontier thesis," pointed to a number of signs that marked the close of the frontier, a transitional period that varied in time and from place to place. One of these signs was the rise of class conflict, which the Ludlow Massacre in 1914 was Exhibit A. Ludlow, by the way, is just a few dozen miles north of the New Mexican state line. Until 1912, New Mexico was considered a territory. Deciding precisely when the frontier closed in one place versus another, can quickly become an exercise in pedantry rather than scholarship. Even Turner's famous exhaustion of free land as of 1890 doesn't work. Claims under the Homestead Act didn't actually start to drop until after the 1930s. 134.124.27.23 (talk) 19:13, 9 December 2023 (UTC)[reply]

when a scholarly book explicitly denies that it deals with frontier history, we should not include it in our bibliog of the frontier. Rjensen (talk) 22:32, 9 December 2023 (UTC)[reply]