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Doolen 1972,第445頁. Doolen, Richard M. 'Brick' Pomeroy and the Greenback Clubs. Journal of the Illinois State Historical Society. Winter 1972, 65 (4): 434–450. JSTOR 40191206.
Doolen 1972,第447頁. Doolen, Richard M. 'Brick' Pomeroy and the Greenback Clubs. Journal of the Illinois State Historical Society. Winter 1972, 65 (4): 434–450. JSTOR 40191206.
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Colbert 1978,第39頁. Colbert, Thomas Burnell. Political Fusion in Iowa: The Election of James B. Weaver to Congress in 1878. Arizona and the West. Spring 1978, 20 (1): 25–40. JSTOR 40168674.
Clausen 1965,第201–202頁. Clausen, E. Neal. Hendrick B. Wright and the 'Nocturnal Committee'. The Pennsylvania Magazine of History and Biography. 1965-04, 89 (2): 199–206. JSTOR 20089793.
Clausen 1965,第203–205頁. Clausen, E. Neal. Hendrick B. Wright and the 'Nocturnal Committee'. The Pennsylvania Magazine of History and Biography. 1965-04, 89 (2): 199–206. JSTOR 20089793.
Deverell 1988,第274頁. Deverell, Wiliam F. To Loosen the Safety Valve: Eastern Workers and Western Lands. The Western Historical Quarterly. 1988-08, 19 (3): 269–285. JSTOR 968232.
Deverell 1988,第275頁. Deverell, Wiliam F. To Loosen the Safety Valve: Eastern Workers and Western Lands. The Western Historical Quarterly. 1988-08, 19 (3): 269–285. JSTOR 968232.