Peck, Reinventing Free Labor, 51-53

Yuji Ichioka, "Japanese Immigrant Labor Contractors and the Northern Pacific and the Great Northern Railroad Companies, 1898-1907," Labor History (1980): 326, 330-31, 333, 336-37

Callaway to Neasham, Sept. 22, 1885, Neasham to Callaway, Sept. 26, 1885, both in To the Employes of the Union Pacific Railway Co. from Executive Committee Employees, Sept. 26, 1885, Powderly Papers, r. 10

William F. Chew, Nameless Builders of the Transcontinental Railway: The Chinese Workers of the Central Pacific Railroad (Victoria, B.C.: Trafford, 2004), 49-52

Justice to Editor, March 13, 1887, Union Pacific Employes Magazine, April 1887, pp. 94-95.