Foster purchased his partner Briggs's interest in the paper

The evidence

• “Y. In May, 1854, Foster purchased the interest of his partner, Briggs, who had been elected to the Legislature, and continued the publication of a Republican paper until August, 1855, when he sold out to A. Paine, J., J.”

  1879-history-of-rock-county/11-rock-county-ch05-press-institutions-tragedy.md, PDF p. 397 / book p. 401

  Butterfield, C. W., et al. The History of Rock County, Wisconsin: its early settlement, growth, development, resources, etc. Chicago: Western Historical Company, 1879. Cornell University Library via the Internet Archive, archive.org/details/cu31924028871585.

  Grade A: Found on a page of one of our sources

  

• “Foster, of Troy, New York. In May, 1854, Foster purchased the interest of his partner and continued the publication of a Republican paper until August, 1855, when he sold out to A. Paine, J.”

  1908-brown-rock-county/30-press-of-beloit.md, Vol. 2, PDF p. 125 / book p. 634

  Brown, William Fiske, editor. Rock County, Wisconsin: A New History of Its Cities, Villages, Towns, Citizens and Varied Interests, from the Earliest Times, Up to Date. Chicago: C. F. Cooper & Co., 1908. 2 vols. archive.org/details/rockcountywiscon01brow, archive.org/details/rockcountywiscon02brow.

  Grade A: Found on a page of one of our sources · may repeat 1879-history-of-rock-county, so not counted as independent