1863 William J. Forbes and, briefly, Charles L. Perkins began and ran the Humboldt Register in Unionville, NV,
1867 Judge George G. Berry, Henry C. Street, and McKaskia S. Bonnifield,
1867 Judge George G. Berry and Henry C. Street,
Feb 1869 Workingman's Protective Union who changed its name to the Humboldt Register and Working Man's Advocate,
April 1869 E. D. Kelley and Company,
May 1869 E. D. Kelley suspended the Humboldt Register and Workingman's Advocate and moved to Elko, starting the Elko Independent, 
October 1869 Kelley sold the Independent and moved to Winnemucca, reviving the Humboldt Register with McKaskia Bonnifield,,
March 1870 Robert McBeth,
August 1870 John Robbins,
1872 Thomas V. Julien and H. A. Waldo,
January 1876 Charles H. Stoddard and added the Daily Humboldt Register to the weekly paper, 
November 1876 Stoddard suspended the Humboldt Register (the weekly) and sold it to H. A. Waldo and J. C. Ragsdale,
December 1876 Waldo and Ragsdale suspended the paper again and moved to Eureka to found the Republican

Lingenfelter, R. E., & Gash, K. R. (1984). The Newspapers of Nevada. p.249-250, 280.

Humboldt Register, Unionville, NV (1863-1869)
Humboldt Register and Workingman's Advocate, Unionville (1869)
Humboldt Register, Winnemucca, NV (1869-1876, this collection contains publications until 1870)
Daily Humboldt Register, Winnemucca, NV (1876)

Related:
Elko Independent, Elko, NV (1869-1871)
Eureka Daily Republican, Eureka, NV (available in microfilm)(1877-1878)